Multiple problems around CI/CD

[kelson42]

• 12.1.0 as not been published on PPA
• Not using the release trigger
• Debian packages are not tested in the CI (and probably don't pass)
• Unable to compile anyway on Debian unstable because of
• CI not using latest base image
• ....

[mgautierfr]

12.1.0 as not been published on PPA

It seems that the root cause is this PR #895 which filter the trigger on push on main only (and so, not running the CI on tag push)

Debian packages are not tested in the CI (and probably don't pass)

They are. See all workflow runs in https://github.com/kiwix/libkiwix/actions/workflows/package.yml

Although, the publication of the package is done only on main and it fails for kinetic. I don't why it fails (and why I don't have notification for them).
But building the package is run on all PR.

Unable to compile anyway on Debian unstable because of

#877

[kelson42]

Debian packages are not tested in the CI (and probably don't pass)

They are. See all workflow runs in https://github.com/kiwix/libkiwix/actions/workflows/package.yml

They are not, I guess you are mixing deb files for Ubuntu and deb files for Debian.

[mgautierfr]

They are not, I guess you are mixing deb files for Ubuntu and deb files for Debian.

Indeed.
BTW, this part is a enhancement, not a bug (I'm not saying that we shouldn't do it).