community/py3-phonenumbers: upgrade to 8.12.51
https://github.com/daviddrysdale/python-phonenumbers/compare/v8.12.48...v8.12.51
- Merge metadata changes from upstream 8.12.49
- Generated files for metadata
- tests: use assertIsNone in phonenumberutiltest.py
- Merge metadata changes from upstream 8.12.50
- Generated files for metadata
- Merge code changes from upstream 8.12.51
- Merge metadata changes from upstream 8.12.51
- Generated files for metadata
Edited by Patrycja Rosa