Bump grpcio from 1.67.0 to 1.67.1

Bumps [grpcio](https://github.com/grpc/grpc) from 1.67.0 to 1.67.1.
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.67.0...v1.67.1)

---
updated-dependencies:
- dependency-name: grpcio
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements/extras/gcpubsub.txt

@@ -1,4 +1,4 @@
 google-cloud-pubsub>=2.18.4
 google-cloud-monitoring>=2.16.0
-grpcio==1.67.0
+grpcio==1.67.1
 protobuf==4.25.5