chore(main): release 3.0.0 (#269)

🤖 I have created a release *beep* *boop*
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## [3.0.0](googleapis/nodejs-dialogflow-cx@v2.15.0...v3.0.0) (2022-06-23)


### ⚠ BREAKING CHANGES

* update library to use Node 12 (#288)

### Features

* add Webhook samples ([#259](googleapis/nodejs-dialogflow-cx#259)) ([709dc6d](googleapis/nodejs-dialogflow-cx@709dc6d))
* added audio_export_settings ([#257](googleapis/nodejs-dialogflow-cx#257)) ([39f1d1c](googleapis/nodejs-dialogflow-cx@39f1d1c))
* added data format specification for export agent ([361e7d9](googleapis/nodejs-dialogflow-cx@361e7d9))
* added data format specification for export agent ([361e7d9](googleapis/nodejs-dialogflow-cx@361e7d9))
* added page in TestConfig ([7adaf67](googleapis/nodejs-dialogflow-cx@7adaf67))
* added page in TestConfig ([#239](googleapis/nodejs-dialogflow-cx#239)) ([283c389](googleapis/nodejs-dialogflow-cx@283c389))
* added support for locking an agent for changes ([361e7d9](googleapis/nodejs-dialogflow-cx@361e7d9))
* added support for locking an agent for changes ([361e7d9](googleapis/nodejs-dialogflow-cx@361e7d9))


### Build System

* update library to use Node 12 ([#288](googleapis/nodejs-dialogflow-cx#288)) ([9a72b32](googleapis/nodejs-dialogflow-cx@9a72b32))

---
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]

dialogflow-cx/package.json

@@ -13,7 +13,7 @@
     "test": "c8 mocha --timeout 600000 test/*.js"
   },
   "dependencies": {
-    "@google-cloud/dialogflow-cx": "^2.14.0",
+    "@google-cloud/dialogflow-cx": "^3.0.0",
     "uuid": "^8.3.1"
   },
   "devDependencies": {