Upgrades to Ubuntu 24.04.1 LTS are enabled again

Last Wednesday, we temporarily suspended upgrades to Ubuntu 24.04.1 LTS due to unforeseen issues with dependencies of installed kernel headers after release upgrades. These issues were tracked in bug 2078720 and have now been resolved, and upgrades to 24.04.1 LTS have been enabled again.

...

This issue has been fixed in the APT 2.4.13 update in 22.04 LTS, and upgrades from interim releases have been addressed by a fallback to the previous algorithm in the ubuntu-release-upgrader 1:24.04.23 stable release update. We are adding additional checks to our automated upgrade testing to prevent similar issues in the future.

If you are affected by this issue, you can run apt install --fix-broken to remove the old kernel headers and make apt operational again.