chore: release 2.5.0 (#84)

🤖 I have created a release \*beep\* \*boop\*
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## [2.5.0](https://www.github.com/googleapis/nodejs-dialogflow-cx/compare/v2.4.0...v2.5.0) (2021-04-28)


### Features

* Expose supported languages of the agent; feat: add export / import flow API docs: Update docs on Pages, Session, Version, etc. ([#103](https://www.github.com/googleapis/nodejs-dialogflow-cx/issues/103)) ([daa06ab](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/daa06abca3ef1e601672d9a18363603dcb359c6f))
* include original user query in WebhookRequest; add GetTextCaseresult API.  ([528192e](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/528192eb11453502332a35ff5838130e19c5e869))
* include original user query in WebhookRequest; add GetTextCaseresult API. doc: clarify resource format for session response. ([#82](https://www.github.com/googleapis/nodejs-dialogflow-cx/issues/82)) ([ff13a97](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/ff13a9708fccc0bf85f7972328dc289b50fdac20))
* support setting current_page to resume sessions; expose transition_route_groups in flows and language_code in webhook ([#90](https://www.github.com/googleapis/nodejs-dialogflow-cx/issues/90)) ([53f1e21](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/53f1e21deaf3adee3493b398529fc75baae70f99))
* support setting current_page to resume sessions; expose transition_route_groups in flows and language_code in webhook ([#91](https://www.github.com/googleapis/nodejs-dialogflow-cx/issues/91)) ([cd125d3](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/cd125d35c75ad740d3aa46d5af4a2142aaa051f1))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

dialogflow-cx/package.json

@@ -13,7 +13,7 @@
     "test": "c8 mocha --timeout 600000 test/*.js"
   },
   "dependencies": {
-    "@google-cloud/dialogflow-cx": "^2.4.0",
+    "@google-cloud/dialogflow-cx": "^2.5.0",
     "uuid": "^8.3.1"
   },
   "devDependencies": {