Bump grpcio from 1.26.0 to 1.53.0

Bumps [grpcio](https://github.com/grpc/grpc) from 1.26.0 to 1.53.0.
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.26.0...v1.53.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -16,7 +16,7 @@ gast==0.2.2
 google-auth==1.11.0
 google-auth-oauthlib==0.4.1
 google-pasta==0.1.7
-grpcio==1.26.0
+grpcio==1.53.0
 h5py==2.10.0
 idna==2.8
 ImageHash==4.0