Cannot display code coverage report if artifacts from target branch have expired

[fgrosse]

It may happen that the uploaded code coverage artifact has expired already when we run the action. This is likely on repositories which do not receive changes frequently and thus, when a PR is opened, the code coverage from main will be missing.

[fgrosse]

GitHub actions artifacts by default expire after 90 days (which is also the maximum).

[bejelith]

This is also a problem when initialing a new repository, the coverage report fails because main has never reported before - in this case better then failing would be nice to just have the current code coverage values imho.

[wmcnamee-coreweave]

I just ran into this same problem. Not a great first impression. :(

[parvezmrobin]

Ran into the same problem. Is there a fix being implemented? I'm also willing to send a PR if the author wants.

[necipallef]

I have this PR as a suggested solution, this PR introduces workflow_dispatch alternative to re-create expired artifacts. Would you be open to this solution?