Comment 7 for bug 1872564

squid in focal is indeed another package that triggers that denial but it is non fatal there as mentioned by Andreas.

@ahasenack, with 4.11, squid's systemd unit moved from Type=forking to Type=notify and with the error you showed, I would expect you to see a denial trying to write to /run/systemd/notify. I don't think a rule for /run/systemd/notify was added in any abstraction (yet) and I don't see any such rule in squid's profile itself.