fix(deps): update dependency @google-cloud/error-reporting to v3 (#150)

Author: renovate-bot

cloudprober/package.json

@@ -4,7 +4,7 @@
   "description": "grpc cloudprober for Node.js",
   "main": "index.js",
   "dependencies": {
-    "@google-cloud/error-reporting": "^2.0.0",
+    "@google-cloud/error-reporting": "^3.0.0",
     "argparse": "^2.0.0",
     "bluebird": "^3.5.2",
     "google-auth-library": "^8.0.0",