Bump google.golang.org/grpc from 1.35.0 to 1.53.0

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.35.0 to 1.53.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.35.0...v1.53.0)

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

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

go.mod

@@ -3,14 +3,12 @@ module github.com/nutanix/kps-connector-go-sdk
 go 1.15
 
 require (
-	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
-	github.com/golang/protobuf v1.4.3
+	github.com/golang/glog v1.0.0
+	github.com/golang/protobuf v1.5.2
 	github.com/nats-io/nats-server/v2 v2.1.9
 	github.com/nats-io/nats.go v1.10.0
 	github.com/prometheus/client_golang v1.9.0
-	github.com/stretchr/testify v1.7.0
-	golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb // indirect
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
-	google.golang.org/grpc v1.35.0
-	google.golang.org/protobuf v1.25.0
+	github.com/stretchr/testify v1.8.1
+	google.golang.org/grpc v1.53.0
+	google.golang.org/protobuf v1.28.1
 )