chore: release 2.3.0 (#500)

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

Author: release-please[bot]

cloud-tasks/package.json

@@ -15,7 +15,7 @@
     "start": "node server.js"
   },
   "dependencies": {
-    "@google-cloud/tasks": "^2.2.0",
+    "@google-cloud/tasks": "^2.3.0",
     "body-parser": "^1.18.3",
     "express": "^4.16.3"
   },