Bump types-protobuf from 6.30.2.20250503 to 6.30.2.20250506

Bumps [types-protobuf](https://github.com/typeshed-internal/stub_uploader) from 6.30.2.20250503 to 6.30.2.20250506.
- [Commits](https://github.com/typeshed-internal/stub_uploader/commits)

---
updated-dependencies:
- dependency-name: types-protobuf
  dependency-version: 6.30.2.20250506
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements-mypy.txt

@@ -1,5 +1,5 @@
 mypy==1.15.0
 mypy-extensions==1.1.0
 types-jsonschema==4.23.0.20241208
-types-protobuf==6.30.2.20250503
+types-protobuf==6.30.2.20250506
 types-requests==2.32.0.20250328