chore(main): release 3.1.2 (#635)

🤖 I have created a release *beep* *boop*
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## [3.1.2](https://github.com/googleapis/nodejs-automl/compare/v3.1.1...v3.1.2) (2022-09-22)


### Bug Fixes

* Preserve default values in x-goog-request-params header ([#634](https://github.com/googleapis/nodejs-automl/issues/634)) ([1949bf9](https://github.com/googleapis/nodejs-automl/commit/1949bf9a26b63b4eefd13f5c6164691db46a0df2))

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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).

automl/package.json

@@ -16,7 +16,7 @@
     "!test/"
   ],
   "dependencies": {
-    "@google-cloud/automl": "^3.1.1",
+    "@google-cloud/automl": "^3.1.2",
     "csv": "^6.0.0",
     "mathjs": "^11.0.0",
     "yargs": "^16.0.0"