Bump grpcio from 1.53.0 to 1.53.2 in /consistency/tool

Bumps [grpcio](https://github.com/grpc/grpc) from 1.53.0 to 1.53.2.
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.53.0...v1.53.2)

---
updated-dependencies:
- dependency-name: grpcio
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

consistency/tool/requirements.txt

@@ -7,7 +7,7 @@ google-api-core==2.8.2
 google-auth==2.9.1
 google-cloud-apigeeregistry==0.0.0
 googleapis-common-protos==1.56.4
-grpcio==1.53.0
+grpcio==1.53.2
 grpcio-status==1.47.0
 grpcio-tools==1.47.0
 idna==3.3