Bump google.golang.org/grpc from 1.53.0 to 1.56.3

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.53.0 to 1.56.3.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.53.0...v1.56.3)

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

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

go.mod

@@ -7,14 +7,14 @@ require (
 	github.com/dchest/safefile v0.0.0-20151022103144-855e8d98f185
 	github.com/fortytw2/leaktest v1.3.0 // indirect
 	github.com/go-sql-driver/mysql v1.4.0 // indirect
-	github.com/golang/protobuf v1.5.2
+	github.com/golang/protobuf v1.5.3
 	github.com/jolestar/go-commons-pool v2.0.0+incompatible
 	github.com/lib/pq v1.2.0
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.11.1
 	github.com/sirupsen/logrus v1.6.0
-	github.com/stretchr/testify v1.8.1
+	github.com/stretchr/testify v1.8.3
 	github.com/urfave/cli v1.22.1
 	go4.org v0.0.0-20190919214946-0cfe6e5be80f
-	google.golang.org/grpc v1.53.0
+	google.golang.org/grpc v1.56.3
 )