Bump grpcio from 1.49.1 to 1.50.0 in /test (#341)

Bumps [grpcio](https://github.com/grpc/grpc) from 1.49.1 to 1.50.0.
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.49.1...v1.50.0)

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

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test/requirements.ci.txt

@@ -2,5 +2,5 @@ docker==6.0.0
 requests==2.28.1
 websocket-client==1.4.1
 urllib3==1.26.12
-grpcio==1.49.1
+grpcio==1.50.0
 protobuf==4.21.7