chore(deps): bump grpcio-tools from 1.51.1 to 1.54.2 in /backend

Bumps [grpcio-tools](https://github.com/grpc/grpc) from 1.51.1 to 1.54.2.
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.51.1...v1.54.2)

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

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

backend/requirements.txt

@@ -17,7 +17,7 @@ requests>=2.20.0
 uwsgi==2.0.21
 zxcvbn==4.4.28
 grpcio==1.53.0
-grpcio-tools==1.51.1
+grpcio-tools==1.54.2
 minio==7.1.14
 django-prometheus==2.3.1
 django-filter==23.2