fix(deps): update dependency googleapis to v115 (#3126)

Author: renovate-bot

functions/billing/package.json

@@ -17,7 +17,7 @@
     "@google-cloud/billing": "^3.0.0",
     "@google-cloud/compute": "^3.1.0",
     "google-auth-library": "^8.0.0",
-    "googleapis": "^114.0.0",
+    "googleapis": "^115.0.0",
     "slack": "^11.0.1"
   },
   "devDependencies": {