Bump google.golang.org/grpc from 1.52.3 to 1.55.0 in /examples/dyplomat

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.52.3 to 1.55.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.52.3...v1.55.0)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

examples/dyplomat/go.mod

@@ -4,7 +4,7 @@ go 1.17
 
 require (
 	github.com/envoyproxy/go-control-plane v0.11.0
-	google.golang.org/grpc v1.52.3
+	google.golang.org/grpc v1.55.0
 	gopkg.in/yaml.v2 v2.4.0
 	k8s.io/api v0.27.2
 	k8s.io/apimachinery v0.27.2
@@ -16,11 +16,11 @@ require (
 	github.com/aws/aws-sdk-go v1.44.213 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/census-instrumentation/opencensus-proto v0.4.1 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
-	github.com/cncf/xds/go v0.0.0-20220314180256-7f1daf1720fc // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cncf/xds/go v0.0.0-20230310173818-32f1caf87195 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/emicklei/go-restful/v3 v3.9.0 // indirect
-	github.com/envoyproxy/protoc-gen-validate v0.9.1 // indirect
+	github.com/envoyproxy/protoc-gen-validate v0.10.0 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-openapi/jsonpointer v0.19.6 // indirect
 	github.com/go-openapi/jsonreference v0.20.1 // indirect
@@ -46,14 +46,14 @@ require (
 	github.com/prometheus/procfs v0.8.0 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
 	golang.org/x/net v0.8.0 // indirect
-	golang.org/x/oauth2 v0.0.0-20221014153046-6fdb5e3db783 // indirect
+	golang.org/x/oauth2 v0.6.0 // indirect
 	golang.org/x/sys v0.6.0 // indirect
 	golang.org/x/term v0.6.0 // indirect
 	golang.org/x/text v0.8.0 // indirect
 	golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto v0.0.0-20221118155620-16455021b5e6 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
+	google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4 // indirect
+	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/klog/v2 v2.90.1 // indirect