python3: Update to version 3.10.1

python3: Update to version 3.10.1

- Update from 3.8.7 to 3.10.1
- Update of rootfile
- libvirt needs to be updated to 7.10.0 before this patch series is implemented
   otherwise the old libvirt (6.5.0) will fail to build with the new python3.
- Changelog is w2ay to big to show here. Details can be found by viewing 3.9.rst and
   3.10.rst in the Doc/whatsnew/ folder in the source tarball

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Tested-by: Adolf Belka <adolf.belka@ipfire.org
Reviewed-by: Peter Müller <peter.mueller@ipfire.org>