chore: release 2.0.1 (#536)

🤖 I have created a release \*beep\* \*boop\* 
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### [2.0.1](https://www.github.com/googleapis/nodejs-error-reporting/compare/v2.0.0...v2.0.1) (2021-01-14)


### Bug Fixes

* convert AdditionalMessage param into string type CustomMessage ([#535](https://www.github.com/googleapis/nodejs-error-reporting/issues/535)) ([ba7d8b0](https://www.github.com/googleapis/nodejs-error-reporting/commit/ba7d8b01b6351354c88a675bfe55910e7a2c0eff))
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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]

error-reporting/package.json

@@ -15,7 +15,7 @@
     "test": "mocha --timeout=600000"
   },
   "dependencies": {
-    "@google-cloud/error-reporting": "^2.0.0",
+    "@google-cloud/error-reporting": "^2.0.1",
     "express": "^4.16.3"
   },
   "devDependencies": {