chore: release 2.2.0 (#497)

🤖 I have created a release \*beep\* \*boop\* 
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## [2.2.0](https://www.github.com/googleapis/nodejs-tasks/compare/v2.1.3...v2.2.0) (2021-01-09)


### Features

* introduces style enumeration ([#496](https://www.github.com/googleapis/nodejs-tasks/issues/496)) ([680f1dc](https://www.github.com/googleapis/nodejs-tasks/commit/680f1dcd269d25247a54157108c524f8946dc624))


### Bug Fixes

* **samples:** remove unused variables ([#492](https://www.github.com/googleapis/nodejs-tasks/issues/492)) ([81c4b4e](https://www.github.com/googleapis/nodejs-tasks/commit/81c4b4ece21eb99cec582d3256192de6c402d771))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

Author: release-please[bot]

cloud-tasks/package.json

@@ -15,7 +15,7 @@
     "start": "node server.js"
   },
   "dependencies": {
-    "@google-cloud/tasks": "^2.1.3",
+    "@google-cloud/tasks": "^2.2.0",
     "body-parser": "^1.18.3",
     "express": "^4.16.3"
   },