chore(deps): bump google.golang.org/grpc in /test/e2e/testbackend (ap…

…ache#2026)

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.42.0 to 1.56.3.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.42.0...v1.56.3)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

test/e2e/testbackend/go.mod

@@ -3,15 +3,15 @@ module github.com/apache/apisix-ingress-controller/test/e2e/testbackend
 go 1.17
 
 require (
-	google.golang.org/grpc v1.42.0
+	google.golang.org/grpc v1.56.3
 	google.golang.org/grpc/examples v0.0.0-20211119181224-d542bfcee46d
 )
 
 require (
-	github.com/golang/protobuf v1.4.3 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
 	golang.org/x/net v0.17.0 // indirect
 	golang.org/x/sys v0.13.0 // indirect
 	golang.org/x/text v0.13.0 // indirect
-	google.golang.org/genproto v0.0.0-20200806141610-86f49bd18e98 // indirect
-	google.golang.org/protobuf v1.25.0 // indirect
+	google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 // indirect
+	google.golang.org/protobuf v1.30.0 // indirect
 )