build(deps): Bump types-protobuf in /requirements

Bumps [types-protobuf](https://github.com/typeshed-internal/stub_uploader) from 6.32.1.20251105 to 6.32.1.20251210.
- [Commits](https://github.com/typeshed-internal/stub_uploader/commits)

---
updated-dependencies:
- dependency-name: types-protobuf
  dependency-version: 6.32.1.20251210
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements/requirements_test.txt

@@ -15,6 +15,6 @@ pytest-xdist==3.8.0
 pydocstyle==6.3.0
 mypy==1.19.0
 mypy-protobuf==3.7.0
-types-protobuf==6.32.1.20251105
+types-protobuf==6.32.1.20251210
 types-requests==2.32.4.20260107
 types-tabulate==0.9.0.20241207