chore: release 2.3.1 (#467)

🤖 I have created a release \*beep\* \*boop\* 
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### [2.3.1](https://www.github.com/googleapis/nodejs-automl/compare/v2.3.0...v2.3.1) (2020-11-25)


### Bug Fixes

* **browser:** check for fetch on window ([50a3083](https://www.github.com/googleapis/nodejs-automl/commit/50a308349f819b06867b13d0300175b3ee5f43b7))
* do not modify options object, use defaultScopes ([#466](https://www.github.com/googleapis/nodejs-automl/issues/466)) ([8aaf0c3](https://www.github.com/googleapis/nodejs-automl/commit/8aaf0c3aed7f4c2c705d14d4277223e11ba7349f))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please).

Author: release-please[bot]

automl/package.json

@@ -16,7 +16,7 @@
     "!test/"
   ],
   "dependencies": {
-    "@google-cloud/automl": "^2.3.0",
+    "@google-cloud/automl": "^2.3.1",
     "csv": "^5.1.3",
     "mathjs": "^8.0.0",
     "yargs": "^16.0.0"