[Merge] ~enr0n/ubuntu/+source/systemd:ubuntu-focal-sru into ~ubuntu-core-dev/ubuntu/+source/systemd:ubuntu-focal

[Nick Rosbrook]

autopkgtest on most arches is looking good. The failure on amd64 is one of the usual flaky tests in upstream tests (TEST-36-NUMAPOLICY).

systemd 245.4-4ubuntu3.20~ppa3 (s390x) -- Pass: https://autopkgtest.ubuntu.com/results/autopkgtest-focal-enr0n-systemd-245/focal/s390x/s/systemd/20230223_215845_a5bdd@/log.gz
systemd 245.4-4ubuntu3.20~ppa3 (arm64) -- Pass: https://autopkgtest.ubuntu.com/results/autopkgtest-focal-enr0n-systemd-245/focal/arm64/s/systemd/20230223_231724_d28f5@/log.gz
systemd 245.4-4ubuntu3.20~ppa3 (ppc64el) -- Pass: https://autopkgtest.ubuntu.com/results/autopkgtest-focal-enr0n-systemd-245/focal/ppc64el/s/systemd/20230223_225526_a5bdd@/log.gz
systemd 245.4-4ubuntu3.20~ppa3 (amd64) -- Fail: https://autopkgtest.ubuntu.com/results/autopkgtest-focal-enr0n-systemd-245/focal/amd64/s/systemd/20230224_021741_a5bdd@/log.gz

On armhf, we are hitting LP: #1991285, and the flaky test-execute. I think we need to work around LP: #1991285 though. It would not actually be considered a regression to britney, but I don't think we want to leave that hanging around.
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https://code.launchpad.net/~enr0n/ubuntu/+source/systemd/+git/systemd/+merge/437809
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