image-deps: update GitHub Actions runner client

[delan]

Fixes: #128

[delan]

deploying:

$ cd server/nixos
$ for i in {0..4}; do ./do deploy ci$i & done

the update deadline is in two days, which is less than our usual weekly image rebuild schedule. with #130, forcing image rebuilds as follows:

$ ./do read ci{0..4}
$ sed -Ei.old 's/# (destroy_all_non_busy_runners = true)/\1/' ci{0..4}/monitor.toml
$ ./do write ci{0..4}
$ ./do restart-monitor ci{0..4}
$ ./do run ci{0..4} -- rm -v /config/monitor/data/profiles/\*/snapshot
$ for i in {0..4}; do ./do run ci$i -- virsh list --all --name | rg '^ci-template-' | tr \\n \\0 | xargs -0n1 echo ./do run ci$i -- virsh undefine --; done | tee undefine.sh
$ . ./undefine.sh
$ for i in {0..4}; do mv -v ci$i/monitor.toml{.old,}; done
$ ./do write ci{0..4}
$ ./do restart-monitor ci{0..4}

• undefine.sh