Bump google.golang.org/grpc in /_examples/cluster-pubsub

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.46.2 to 1.56.3.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.46.2...v1.56.3)

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

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

_examples/cluster-pubsub/go.mod

@@ -5,19 +5,19 @@ go 1.18
 require (
 	github.com/asynkron/goconsole v0.0.0-20160504192649-bfa12eebf716
 	github.com/asynkron/protoactor-go v0.0.0-20230121103438-4df724400d0f
-	google.golang.org/protobuf v1.28.1
+	google.golang.org/protobuf v1.30.0
 )
 
 require (
 	github.com/Workiva/go-datastructures v1.0.53 // indirect
 	github.com/asynkron/gofun v0.0.0-20220329210725-34fed760f4c2 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/lithammer/shortuuid/v4 v4.0.0 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
@@ -35,9 +35,9 @@ require (
 	go.opentelemetry.io/otel/sdk/metric v0.30.0 // indirect
 	go.opentelemetry.io/otel/trace v1.7.0 // indirect
 	golang.org/x/exp v0.0.0-20220518171630-0b5c67f07fdf // indirect
-	golang.org/x/net v0.3.1-0.20221206200815-1e63c2f08a10 // indirect
-	golang.org/x/sys v0.3.0 // indirect
-	golang.org/x/text v0.5.0 // indirect
-	google.golang.org/genproto v0.0.0-20220526192754-51939a95c655 // indirect
-	google.golang.org/grpc v1.46.2 // indirect
+	golang.org/x/net v0.9.0 // indirect
+	golang.org/x/sys v0.7.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
+	google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 // indirect
+	google.golang.org/grpc v1.56.3 // indirect
 )