Bump grpcio from 1.42.0 to 1.43.0

Bumps [grpcio](https://github.com/grpc/grpc) from 1.42.0 to 1.43.0.
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.42.0...v1.43.0)

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

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

requirements.txt

@@ -9,7 +9,7 @@ google-cloud-core==2.2.1
 google-crc32c==1.3.0
 google-resumable-media==2.1.0
 googleapis-common-protos==1.54.0
-grpcio==1.42.0
+grpcio==1.43.0
 grpcio-status==1.42.0
 idna==3.3
 packaging==21.3