chore: release 2.5.0 (#481)

🤖 I have created a release \*beep\* \*boop\*
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## [2.5.0](https://www.github.com/googleapis/nodejs-cloud-container/compare/v2.4.4...v2.5.0) (2021-08-23)


### Features

* turns on self-signed JWT feature flag ([#480](https://www.github.com/googleapis/nodejs-cloud-container/issues/480)) ([f7a7887](https://www.github.com/googleapis/nodejs-cloud-container/commit/f7a7887be1168b8f15e6de556df5774d1da42b32))
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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).

Author: release-please[bot]

container/snippets/package.json

@@ -14,7 +14,7 @@
     "test": "mocha system-test --timeout 10000"
   },
   "dependencies": {
-    "@google-cloud/container": "^2.4.4"
+    "@google-cloud/container": "^2.5.0"
   },
   "devDependencies": {
     "chai": "^4.2.0",