Bump grpcio-health-checking in /test/environment/grpc

Bumps [grpcio-health-checking](https://grpc.io) from 1.54.2 to 1.55.0.

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

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

test/environment/grpc/requirements.txt

@@ -1,5 +1,5 @@
 grpcio-tools==1.54.2
 grpcio==1.55.0
 grpcio-reflection==1.54.2
-grpcio-health-checking==1.54.2
+grpcio-health-checking==1.55.0
 grpcio-testing==1.54.2