replace warning about not all issues published with individual warnings why an issue did not get published

[Archaeopteryx]

Currently, a warning gets logged if the amount of issues published is lower than the count of issues passed to the function to publish them. The case which prevent publishing get ignored (rust linting message starting a full stop) or log a warning except when the backend rejects the publication request.

Many instances of the current warning - 129 in total over the last 24h - could be from the rust linting.

Drop the count check of issues published but log a warning if the backend rejected the publication request.