build(deps): bump phonenumbers from 8.12.15 to 8.12.19

Bumps [phonenumbers](https://github.com/daviddrysdale/python-phonenumbers) from 8.12.15 to 8.12.19.
- [Release notes](https://github.com/daviddrysdale/python-phonenumbers/releases)
- [Commits](daviddrysdale/python-phonenumbers@v8.12.15...v8.12.19)

Signed-off-by: dependabot[bot] <support@github.com>