Bump mypy from 1.11.2 to 1.12.0 in /auth/libraries/pip-auth

Bumps [mypy](https://github.com/python/mypy) from 1.11.2 to 1.12.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.11.2...v1.12.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

auth/libraries/pip-auth/requirements_development.txt

@@ -2,7 +2,7 @@ autoflake==2.3.1
 black==24.10.0
 flake8==7.1.1
 isort==5.13.2
-mypy==1.11.2
+mypy==1.12.0
 pytest==8.3.3
 
 types-redis==4.6.0.20241004