The download link https://go.skype.com/skypeforlinux-64.rpm still works for now but I already have the more recent v8.109.0.209 RPM installed, and I don’t want to overwrite it in case I can’t get it back.
However, logging in to Skype (haven’t done that in years) shows a message that it is “outdated” and being phased out for the SNAP.
This post by a Microsoft employee confirms it:
we have decided to discontinue the distribution of Skype as DEB and RPM packages for Linux users, and instead focus on delivering Skype as a SNAP package.
So, the main thing to do is remove the Skype repo.