After the introduction of the reusable get-merge-commit.yml workflow,
this now applies it on all remaining workflows that depend on a merge
commit. This ensures that CI doesn't fail for those PRs, which would
cause notifications to be sent, and the CI run to be marked as failed in
the list of runs.
In the previous two commits, security issues with these workflows were
fixed. In order for these to not be exploitable for PRs to branches that
don't have the fixes yet (including read-only branches like
nixos-unstable), these workflows are renamed, so that the old ones can
be turned off manually via GitHub interface.
Co-Authored-By: 13x1 <tori@disroot.org>
Co-Authored-By: basti564 <e3e@disroot.org>