You’ll find out that the plain arm64 version won’t be usable on 13.5. So if you’re on a quite recent macos >=14.0 you can use both 
There are two versions because the github runner for arm64 just supports a build for macos 14
and btw:
to be precise: release notes points out that
Since 4.8 release the support for macOS versions older than 13.5 has been dropped.