setuptools_scm version 7 generates an incorrect version number for wheels

when switching to `setuptools_scm` version 7 we can also drop the dependency on `setuptools_scm_git_archive`, as the functionality is now provided in setuptools_scm` directly.

for the archive functionality it also has a different `.git_archival.txt` template than what we currently use, we should probably update that: https://github.com/pypa/setuptools_scm#builtin-mechanisms-for-obtaining-version-numbers