chore: release 2.2.1 (#220)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

cloudbuild/package.json

@@ -15,7 +15,7 @@
     "test": "c8 mocha system-test --timeout=800000"
   },
   "dependencies": {
-    "@google-cloud/cloudbuild": "^2.2.0"
+    "@google-cloud/cloudbuild": "^2.2.1"
   },
   "devDependencies": {
     "c8": "^7.0.0",