Bump google.golang.org/grpc in /nginx/nginx_grpc_2/grpc/hello

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.24.0 to 1.53.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.24.0...v1.53.0)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: direct:production
...

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

nginx/nginx_grpc_2/grpc/hello/go.mod

@@ -3,9 +3,9 @@ module hello
 go 1.13
 
 require (
-	github.com/golang/protobuf v1.3.2
+	github.com/golang/protobuf v1.5.2
 	golang.org/x/net v0.7.0
-	google.golang.org/grpc v1.24.0
+	google.golang.org/grpc v1.53.0
 )
 
 replace hello/hello => ./hello