fix(deps): update dependency @google-cloud/pubsub to v5

Author: renovate-bot

e2e-test-server/package.json

@@ -36,7 +36,7 @@
   "dependencies": {
     "@google-cloud/functions-framework": "^3.1.3",
     "@google-cloud/opentelemetry-cloud-trace-exporter": "^3.0.0",
-    "@google-cloud/pubsub": "^4.0.0",
+    "@google-cloud/pubsub": "^5.0.0",
     "@grpc/grpc-js": "^1.3.2",
     "@opentelemetry/api": "^1.9.0",
     "@opentelemetry/context-async-hooks": "^2.0.0",