When removing munin-node without purging the package, its logrotate
configuration remains in /etc. The post-rotation script fails when the
service (that was installed outside /etc) no longer exists. As a result,
logrotate.service fails. Ideally, a removed package does not cause this
kind of failure.

This is filed against the bookworm version and also reproducible in the
trixie version (2.0.76-5). I guess it also applies to unstable. I don't
think it is worth fixing this in trixie or earlier, but maybe we can fix
it for forky?

Helmut