When I install kali-linux in WSL (1) on GitHub Actions virtual machine and then do apt-get update followed by apt-get upgrade --yes, the operation fails.
This worked fine some days ago.

Here the upgrade log:

2020-08-22T10:42:09.7413356Z [command]C:\windows\system32\wsl.exe --distribution kali-linux apt-get upgrade --yes
2020-08-22T10:42:10.3961078Z Reading package lists...
2020-08-22T10:42:10.5435785Z Building dependency tree...
2020-08-22T10:42:10.5436955Z Reading state information...
2020-08-22T10:42:10.6356514Z Calculating upgrade...
2020-08-22T10:42:10.7757913Z The following packages have been kept back:
2020-08-22T10:42:10.7764452Z   bsdmainutils bsdutils libgnutls30 librtmp1 wget
2020-08-22T10:42:10.7773911Z The following packages will be upgraded:
2020-08-22T10:42:10.7774468Z   apt apt-utils base-files bind9-dnsutils bind9-host bind9-libs curl dmsetup
2020-08-22T10:42:10.7774866Z   dnsutils fdisk gcc-10-base gcc-9-base init init-system-helpers iptables less
2020-08-22T10:42:10.7775171Z   libapparmor1 libapt-pkg6.0 libblkid1 libbrotli1 libbz2-1.0 libc-bin
2020-08-22T10:42:10.7775448Z   libc-l10n libc6 libcap2 libcap2-bin libcurl4 libdebconfclient0
2020-08-22T10:42:10.7775711Z   libdevmapper1.02.1 libelf1 libfdisk1 libgcc-s1 libgcrypt20 libgmp10
2020-08-22T10:42:10.7775977Z   libgpg-error0 libicu67 libip4tc2 libip6tc2 libjson-c4 libldap-2.4-2
2020-08-22T10:42:10.7776236Z   libmount1 libpcre3 libpopt0 libprotobuf-c1 libselinux1 libsemanage-common
2020-08-22T10:42:10.7776495Z   libsemanage1 libsepol1 libsmartcols1 libstdc++6 libsystemd0 libudev1
2020-08-22T10:42:10.7776753Z   libuuid1 libuv1 libxtables12 libzstd1 locales-all mount nano perl-base
2020-08-22T10:42:10.7777015Z   publicsuffix rsyslog sudo systemd systemd-sysv systemd-timesyncd
2020-08-22T10:42:10.7777279Z   sysvinit-utils udev util-linux
2020-08-22T10:42:11.2489024Z 69 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
2020-08-22T10:42:11.2489592Z Need to get 47.8 MB of archives.
2020-08-22T10:42:11.2489878Z After this operation, 901 kB of additional disk space will be used.
2020-08-22T10:42:11.2491829Z Get:1 http://kali.download/kali kali-rolling/main amd64 base-files amd64 1:2020.3.1 [72.3 kB]
2020-08-22T10:42:11.2602309Z Get:2 http://kali.download/kali kali-rolling/main amd64 perl-base amd64 5.30.3-4 [1,576 kB]
2020-08-22T10:42:11.2790726Z Get:3 http://kali.download/kali kali-rolling/main amd64 libc-l10n all 2.31-2 [860 kB]
2020-08-22T10:42:11.3280918Z Get:4 http://kali.download/kali kali-rolling/main amd64 locales-all amd64 2.31-2 [10.9 MB]
2020-08-22T10:42:11.5097068Z Get:5 http://kali.download/kali kali-rolling/main amd64 libc6 amd64 2.31-2 [2,839 kB]
2020-08-22T10:42:11.5777703Z Get:6 http://kali.download/kali kali-rolling/main amd64 libc-bin amd64 2.31-2 [801 kB]
2020-08-22T10:42:11.6269682Z Get:7 http://kali.download/kali kali-rolling/main amd64 gcc-10-base amd64 10.1.0-6 [198 kB]
2020-08-22T10:42:11.7274665Z Get:8 http://kali.download/kali kali-rolling/main amd64 libgcc-s1 amd64 10.1.0-6 [41.3 kB]
2020-08-22T10:42:11.8290132Z Get:9 http://kali.download/kali kali-rolling/main amd64 libstdc++6 amd64 10.1.0-6 [493 kB]
2020-08-22T10:42:11.9343354Z Get:10 http://kali.download/kali kali-rolling/main amd64 libselinux1 amd64 3.1-2 [87.3 kB]
2020-08-22T10:42:12.0313660Z Get:11 http://kali.download/kali kali-rolling/main amd64 libblkid1 amd64 2.36-2 [194 kB]
2020-08-22T10:42:12.1299535Z Get:12 http://kali.download/kali kali-rolling/main amd64 libuuid1 amd64 2.36-2 [82.3 kB]
2020-08-22T10:42:12.2334782Z Get:13 http://kali.download/kali kali-rolling/main amd64 libfdisk1 amd64 2.36-2 [237 kB]
2020-08-22T10:42:12.3323819Z Get:14 http://kali.download/kali kali-rolling/main amd64 libmount1 amd64 2.36-2 [212 kB]
2020-08-22T10:42:12.4436869Z Get:15 http://kali.download/kali kali-rolling/main amd64 libsmartcols1 amd64 2.36-2 [158 kB]
2020-08-22T10:42:12.5360558Z Get:16 http://kali.download/kali kali-rolling/main amd64 fdisk amd64 2.36-2 [190 kB]
2020-08-22T10:42:12.6333337Z Get:17 http://kali.download/kali kali-rolling/main amd64 util-linux amd64 2.36-2 [1,135 kB]
2020-08-22T10:42:12.7337769Z Get:18 http://kali.download/kali kali-rolling/main amd64 libbz2-1.0 amd64 1.0.8-4 [45.8 kB]
2020-08-22T10:42:12.8401560Z Get:19 http://kali.download/kali kali-rolling/main amd64 libgpg-error0 amd64 1.38-2 [77.5 kB]
2020-08-22T10:42:12.9420205Z Get:20 http://kali.download/kali kali-rolling/main amd64 libgcrypt20 amd64 1.8.6-2 [559 kB]
2020-08-22T10:42:13.0431370Z Get:21 http://kali.download/kali kali-rolling/main amd64 systemd-timesyncd amd64 246-2 [126 kB]
2020-08-22T10:42:13.1372955Z Get:22 http://kali.download/kali kali-rolling/main amd64 udev amd64 246-2 [1,434 kB]
2020-08-22T10:42:13.2390336Z Get:23 http://kali.download/kali kali-rolling/main amd64 libudev1 amd64 246-2 [161 kB]
2020-08-22T10:42:13.3382743Z Get:24 http://kali.download/kali kali-rolling/main amd64 systemd-sysv amd64 246-2 [108 kB]
2020-08-22T10:42:13.4400226Z Get:25 http://kali.download/kali kali-rolling/main amd64 init-system-helpers all 1.58+kali1 [49.1 kB]
2020-08-22T10:42:13.5382198Z Get:26 http://kali.download/kali kali-rolling/main amd64 sysvinit-utils amd64 2.96-4 [25.0 kB]
2020-08-22T10:42:13.6403628Z Get:27 http://kali.download/kali kali-rolling/main amd64 libapparmor1 amd64 2.13.4-3 [97.1 kB]
2020-08-22T10:42:13.7423370Z Get:28 http://kali.download/kali kali-rolling/main amd64 libcap2 amd64 1:2.42-2 [23.5 kB]
2020-08-22T10:42:13.8435661Z Get:29 http://kali.download/kali kali-rolling/main amd64 libxtables12 amd64 1.8.5-2 [44.2 kB]
2020-08-22T10:42:13.9441995Z Get:30 http://kali.download/kali kali-rolling/main amd64 iptables amd64 1.8.5-2 [383 kB]
2020-08-22T10:42:14.0748669Z Get:31 http://kali.download/kali kali-rolling/main amd64 libip6tc2 amd64 1.8.5-2 [34.7 kB]
2020-08-22T10:42:14.1442601Z Get:32 http://kali.download/kali kali-rolling/main amd64 libip4tc2 amd64 1.8.5-2 [34.4 kB]
2020-08-22T10:42:14.2461802Z Get:33 http://kali.download/kali kali-rolling/main amd64 mount amd64 2.36-2 [184 kB]
2020-08-22T10:42:14.3466390Z Get:34 http://kali.download/kali kali-rolling/main amd64 systemd amd64 246-2 [4,316 kB]
2020-08-22T10:42:14.4474446Z Get:35 http://kali.download/kali kali-rolling/main amd64 libsystemd0 amd64 246-2 [369 kB]
2020-08-22T10:42:14.5487145Z Get:36 http://kali.download/kali kali-rolling/main amd64 libzstd1 amd64 1.4.5+dfsg-4 [307 kB]
2020-08-22T10:42:14.6505803Z Get:37 http://kali.download/kali kali-rolling/main amd64 libapt-pkg6.0 amd64 2.1.10 [994 kB]
2020-08-22T10:42:14.7504753Z Get:38 http://kali.download/kali kali-rolling/main amd64 apt amd64 2.1.10 [1,459 kB]
2020-08-22T10:42:14.8509959Z Get:39 http://kali.download/kali kali-rolling/main amd64 apt-utils amd64 2.1.10 [435 kB]
2020-08-22T10:42:14.9512931Z Get:40 http://kali.download/kali kali-rolling/main amd64 init amd64 1.58+kali1 [15.5 kB]
2020-08-22T10:42:15.0533023Z Get:41 http://kali.download/kali kali-rolling/main amd64 rsyslog amd64 8.2006.0-2 [691 kB]
2020-08-22T10:42:15.1677735Z Get:42 http://kali.download/kali kali-rolling/main amd64 libdebconfclient0 amd64 0.253 [49.4 kB]
2020-08-22T10:42:15.2548643Z Get:43 http://kali.download/kali kali-rolling/main amd64 libgmp10 amd64 2:6.2.0+dfsg-6 [253 kB]
2020-08-22T10:42:15.3545296Z Get:44 http://kali.download/kali kali-rolling/main amd64 libpcre3 amd64 2:8.39-13 [343 kB]
2020-08-22T10:42:15.4541762Z Get:45 http://kali.download/kali kali-rolling/main amd64 libsepol1 amd64 3.1-1 [265 kB]
2020-08-22T10:42:15.5578288Z Get:46 http://kali.download/kali kali-rolling/main amd64 libsemanage-common all 3.1-1 [21.3 kB]
2020-08-22T10:42:15.6581307Z Get:47 http://kali.download/kali kali-rolling/main amd64 libsemanage1 amd64 3.1-1 [98.0 kB]
2020-08-22T10:42:15.7635059Z Get:48 http://kali.download/kali kali-rolling/main amd64 gcc-9-base amd64 9.3.0-15 [197 kB]
2020-08-22T10:42:15.8575529Z Get:49 http://kali.download/kali kali-rolling/main amd64 less amd64 551-2 [133 kB]
2020-08-22T10:42:15.9577950Z Get:50 http://kali.download/kali kali-rolling/main amd64 nano amd64 5.1-1 [644 kB]
2020-08-22T10:42:16.0596823Z Get:51 http://kali.download/kali kali-rolling/main amd64 libjson-c4 amd64 0.13.1+dfsg-9 [37.1 kB]
2020-08-22T10:42:16.1585198Z Get:52 http://kali.download/kali kali-rolling/main amd64 libprotobuf-c1 amd64 1.3.3-1+b2 [27.0 kB]
2020-08-22T10:42:16.2629688Z Get:53 http://kali.download/kali kali-rolling/main amd64 libuv1 amd64 1.38.0-3 [128 kB]
2020-08-22T10:42:16.3622577Z Get:54 http://kali.download/kali kali-rolling/main amd64 bind9-dnsutils amd64 1:9.16.4-1 [382 kB]
2020-08-22T10:42:16.4627105Z Get:55 http://kali.download/kali kali-rolling/main amd64 bind9-libs amd64 1:9.16.4-1 [1,374 kB]
2020-08-22T10:42:16.5666041Z Get:56 http://kali.download/kali kali-rolling/main amd64 bind9-host amd64 1:9.16.4-1 [287 kB]
2020-08-22T10:42:16.6663607Z Get:57 http://kali.download/kali kali-rolling/main amd64 libbrotli1 amd64 1.0.7-7 [267 kB]
2020-08-22T10:42:16.7658795Z Get:58 http://kali.download/kali kali-rolling/main amd64 libldap-2.4-2 amd64 2.4.50+dfsg-1+b1 [228 kB]
2020-08-22T10:42:16.8659212Z Get:59 http://kali.download/kali kali-rolling/main amd64 curl amd64 7.68.0-1+b1 [249 kB]
2020-08-22T10:42:16.9657090Z Get:60 http://kali.download/kali kali-rolling/main amd64 libcurl4 amd64 7.68.0-1+b1 [322 kB]
2020-08-22T10:42:17.0704736Z Get:61 http://kali.download/kali kali-rolling/main amd64 libdevmapper1.02.1 amd64 2:1.02.171-2 [142 kB]
2020-08-22T10:42:17.1990908Z Get:62 http://kali.download/kali kali-rolling/main amd64 dmsetup amd64 2:1.02.171-2 [91.2 kB]
2020-08-22T10:42:17.2694518Z Get:63 http://kali.download/kali kali-rolling/main amd64 dnsutils all 1:9.16.4-1 [247 kB]
2020-08-22T10:42:17.3698844Z Get:64 http://kali.download/kali kali-rolling/main amd64 libcap2-bin amd64 1:2.42-2 [32.6 kB]
2020-08-22T10:42:17.4693088Z Get:65 http://kali.download/kali kali-rolling/main amd64 libelf1 amd64 0.180-1+b1 [165 kB]
2020-08-22T10:42:17.5808542Z Get:66 http://kali.download/kali kali-rolling/main amd64 libicu67 amd64 67.1-3 [8,610 kB]
2020-08-22T10:42:17.6940490Z Get:67 http://kali.download/kali kali-rolling/main amd64 libpopt0 amd64 1.18-1 [49.7 kB]
2020-08-22T10:42:17.7705180Z Get:68 http://kali.download/kali kali-rolling/main amd64 publicsuffix all 20200729.1725-1 [118 kB]
2020-08-22T10:42:17.8723911Z Get:69 http://kali.download/kali kali-rolling/main amd64 sudo amd64 1.9.1-2 [1,011 kB]
2020-08-22T10:42:18.6341297Z Preconfiguring packages ...
2020-08-22T10:42:19.1172256Z Fetched 47.8 MB in 7s (6,767 kB/s)
2020-08-22T10:42:19.2223072Z (Reading database ... 
2020-08-22T10:42:19.2247107Z (Reading database ... 5%
2020-08-22T10:42:19.2276927Z (Reading database ... 10%
2020-08-22T10:42:19.2337158Z (Reading database ... 15%
2020-08-22T10:42:19.2362518Z (Reading database ... 20%
2020-08-22T10:42:19.2391275Z (Reading database ... 25%
2020-08-22T10:42:19.2413906Z (Reading database ... 30%
2020-08-22T10:42:19.2434355Z (Reading database ... 35%
2020-08-22T10:42:19.2434691Z (Reading database ... 40%
2020-08-22T10:42:19.2434936Z (Reading database ... 45%
2020-08-22T10:42:19.2435732Z (Reading database ... 50%
2020-08-22T10:42:19.2435953Z (Reading database ... 55%
2020-08-22T10:42:19.2436183Z (Reading database ... 60%
2020-08-22T10:42:19.2436582Z (Reading database ... 65%
2020-08-22T10:42:19.2436804Z (Reading database ... 70%
2020-08-22T10:42:19.2437026Z (Reading database ... 75%
2020-08-22T10:42:19.2437248Z (Reading database ... 80%
2020-08-22T10:42:19.2437471Z (Reading database ... 85%
2020-08-22T10:42:19.2437689Z (Reading database ... 90%
2020-08-22T10:42:19.2437911Z (Reading database ... 95%
2020-08-22T10:42:19.2441876Z (Reading database ... 100%
2020-08-22T10:42:19.2442494Z (Reading database ... 17039 files and directories currently installed.)
2020-08-22T10:42:19.2443630Z Preparing to unpack .../base-files_1%3a2020.3.1_amd64.deb ...
2020-08-22T10:42:19.2772650Z Unpacking base-files (1:2020.3.1) over (1:2020.2.0) ...
2020-08-22T10:42:19.7039671Z Setting up base-files (1:2020.3.1) ...
2020-08-22T10:42:20.0256209Z (Reading database ... 
2020-08-22T10:42:20.0280027Z (Reading database ... 5%
2020-08-22T10:42:20.0316433Z (Reading database ... 10%
2020-08-22T10:42:20.0378606Z (Reading database ... 15%
2020-08-22T10:42:20.0401716Z (Reading database ... 20%
2020-08-22T10:42:20.0429060Z (Reading database ... 25%
2020-08-22T10:42:20.0450663Z (Reading database ... 30%
2020-08-22T10:42:20.0468361Z (Reading database ... 35%
2020-08-22T10:42:20.0468680Z (Reading database ... 40%
2020-08-22T10:42:20.0468908Z (Reading database ... 45%
2020-08-22T10:42:20.0469119Z (Reading database ... 50%
2020-08-22T10:42:20.0469330Z (Reading database ... 55%
2020-08-22T10:42:20.0469543Z (Reading database ... 60%
2020-08-22T10:42:20.0469749Z (Reading database ... 65%
2020-08-22T10:42:20.0469976Z (Reading database ... 70%
2020-08-22T10:42:20.0471223Z (Reading database ... 75%
2020-08-22T10:42:20.0471445Z (Reading database ... 80%
2020-08-22T10:42:20.0471655Z (Reading database ... 85%
2020-08-22T10:42:20.0471869Z (Reading database ... 90%
2020-08-22T10:42:20.0472079Z (Reading database ... 95%
2020-08-22T10:42:20.0472297Z (Reading database ... 100%
2020-08-22T10:42:20.0472544Z (Reading database ... 17039 files and directories currently installed.)
2020-08-22T10:42:20.0477137Z Preparing to unpack .../perl-base_5.30.3-4_amd64.deb ...
2020-08-22T10:42:20.1349438Z Unpacking perl-base (5.30.3-4) over (5.30.2-1) ...
2020-08-22T10:42:25.3957098Z Setting up perl-base (5.30.3-4) ...
2020-08-22T10:42:25.5794057Z (Reading database ... 
2020-08-22T10:42:25.5818370Z (Reading database ... 5%
2020-08-22T10:42:25.5845268Z (Reading database ... 10%
2020-08-22T10:42:25.5908308Z (Reading database ... 15%
2020-08-22T10:42:25.5932285Z (Reading database ... 20%
2020-08-22T10:42:25.5958420Z (Reading database ... 25%
2020-08-22T10:42:25.5981244Z (Reading database ... 30%
2020-08-22T10:42:25.6001921Z (Reading database ... 35%
2020-08-22T10:42:25.6002336Z (Reading database ... 40%
2020-08-22T10:42:25.6002590Z (Reading database ... 45%
2020-08-22T10:42:25.6002833Z (Reading database ... 50%
2020-08-22T10:42:25.6003059Z (Reading database ... 55%
2020-08-22T10:42:25.6003281Z (Reading database ... 60%
2020-08-22T10:42:25.6003693Z (Reading database ... 65%
2020-08-22T10:42:25.6003981Z (Reading database ... 70%
2020-08-22T10:42:25.6004206Z (Reading database ... 75%
2020-08-22T10:42:25.6004442Z (Reading database ... 80%
2020-08-22T10:42:25.6004668Z (Reading database ... 85%
2020-08-22T10:42:25.6004949Z (Reading database ... 90%
2020-08-22T10:42:25.6005176Z (Reading database ... 95%
2020-08-22T10:42:25.6005397Z (Reading database ... 100%
2020-08-22T10:42:25.6005795Z (Reading database ... 17039 files and directories currently installed.)
2020-08-22T10:42:25.6011139Z Preparing to unpack .../libc-l10n_2.31-2_all.deb ...
2020-08-22T10:42:25.6315526Z Unpacking libc-l10n (2.31-2) over (2.30-8) ...
2020-08-22T10:42:26.2340889Z Preparing to unpack .../locales-all_2.31-2_amd64.deb ...
2020-08-22T10:42:26.2824517Z Unpacking locales-all (2.31-2) over (2.30-8) ...
2020-08-22T10:43:49.7229147Z Preparing to unpack .../libc6_2.31-2_amd64.deb ...
2020-08-22T10:43:50.0558165Z Checking for services that may need to be restarted...
2020-08-22T10:43:50.0558761Z Checking init scripts...
2020-08-22T10:43:50.1275378Z Unpacking libc6:amd64 (2.31-2) over (2.30-8) ...
2020-08-22T10:43:53.1643082Z Setting up libc6:amd64 (2.31-2) ...
2020-08-22T10:43:53.4547335Z Checking for services that may need to be restarted...
2020-08-22T10:43:53.4547986Z Checking init scripts...
2020-08-22T10:43:53.5063980Z Nothing to restart.
2020-08-22T10:43:53.5314202Z sleep: cannot read realtime clock: Invalid argument
2020-08-22T10:43:53.5801282Z dpkg: error processing package libc6:amd64 (--configure):
2020-08-22T10:43:53.5801620Z  installed libc6:amd64 package post-installation script subprocess returned error exit status 1
2020-08-22T10:43:53.6035240Z Errors were encountered while processing:
2020-08-22T10:43:53.6035787Z  libc6:amd64
2020-08-22T10:43:53.9849008Z E: Sub-process /usr/bin/dpkg returned an error code (1)