chore(main): release 3.1.1 (#340)

* chore(main): release 3.1.1

* 🦉 Updates from OwlBot post-processor

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

Author: 2 people

cloudbuild/package.json

@@ -15,7 +15,7 @@
     "test": "c8 mocha system-test --timeout=800000"
   },
   "dependencies": {
-    "@google-cloud/cloudbuild": "^3.1.0"
+    "@google-cloud/cloudbuild": "^3.1.1"
   },
   "devDependencies": {
     "c8": "^7.0.0",