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

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


Updates `google.golang.org/protobuf` from 1.36.10 to 1.36.11

---
updated-dependencies:
- dependency-name: google.golang.org/protobuf
  dependency-version: 1.36.11
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: contrib-golang
...

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

Author: dependabot[bot]

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

@@ -5,7 +5,7 @@ go 1.24.6
 require (
 	github.com/cncf/xds/go v0.0.0-20251110193048-8bfbf64dc13e
 	github.com/envoyproxy/envoy v1.36.2
-	google.golang.org/protobuf v1.36.10
+	google.golang.org/protobuf v1.36.11
 )
 
 require (