Bump proto-plus

Bumps the minor-python group with 1 update in the /shared_requirements directory: [proto-plus](https://github.com/googleapis/proto-plus-python).


Updates `proto-plus` from 1.24.0 to 1.25.0
- [Release notes](https://github.com/googleapis/proto-plus-python/releases)
- [Changelog](https://github.com/googleapis/proto-plus-python/blob/main/CHANGELOG.md)
- [Commits](googleapis/proto-plus-python@v1.24.0...v1.25.0)

---
updated-dependencies:
- dependency-name: proto-plus
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor-python
...

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

shared_requirements/requirements.txt

@@ -42,7 +42,7 @@ packaging==24.1
 pandas==2.2.3
 platformdirs==4.3.6
 pluggy==1.5.0
-proto-plus==1.24.0
+proto-plus==1.25.0
 protobuf
 pyarrow==17.0.0
 pyasn1-modules==0.4.1