chore: release 1.2.3 (#76)

🤖 I have created a release \*beep\* \*boop\*
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### [1.2.3](https://www.github.com/googleapis/nodejs-workflows/compare/v1.2.2...v1.2.3) (2021-06-29)


### Bug Fixes

* **deps:** google-gax v2.17.0 with mTLS ([#75](https://www.github.com/googleapis/nodejs-workflows/issues/75)) ([878255f](https://www.github.com/googleapis/nodejs-workflows/commit/878255f1c9e8be666f469eb35d486efa6ebb3e20))
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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).

workflows/package.json

@@ -13,7 +13,7 @@
     "test": "c8 mocha --timeout 600000 test/*.js"
   },
   "dependencies": {
-    "@google-cloud/workflows": "^1.2.2"
+    "@google-cloud/workflows": "^1.2.3"
   },
   "devDependencies": {
     "c8": "^7.3.0",