build(deps): bump google.golang.org/protobuf

Bumps the contrib-golang group with 1 update in the /contrib/golang/router/cluster_specifier/test/test_data/simple directory: google.golang.org/protobuf.


Updates `google.golang.org/protobuf` from 1.35.2 to 1.36.1

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

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

contrib/golang/router/cluster_specifier/test/test_data/simple/go.mod

@@ -15,7 +15,7 @@ require (
 require (
 	github.com/envoyproxy/protoc-gen-validate v1.0.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
-	google.golang.org/protobuf v1.35.2
+	google.golang.org/protobuf v1.36.1
 )
 
 replace github.com/envoyproxy/envoy => ../../../../../../../