chore: release 2.9.0 (#507)

🤖 I have created a release \*beep\* \*boop\*
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## [2.9.0](https://www.github.com/googleapis/nodejs-kms/compare/v2.8.1...v2.9.0) (2021-10-14)


### Features

* add OAEP+SHA1 to the list of supported algorithms ([#503](https://www.github.com/googleapis/nodejs-kms/issues/503)) ([00cc42e](https://www.github.com/googleapis/nodejs-kms/commit/00cc42ed9a30650fc88d27c8205e08bb305dd0f8))
* add RPC retry information for MacSign, MacVerify, and GenerateRandomBytes Committer: [@bdhess](https://www.github.com/bdhess) ([#506](https://www.github.com/googleapis/nodejs-kms/issues/506)) ([08cd155](https://www.github.com/googleapis/nodejs-kms/commit/08cd15524662ba81a35761df592ea8ce1557e023))
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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]

kms/package.json

@@ -14,7 +14,7 @@
     "test": "c8 mocha --recursive test/ --timeout=800000"
   },
   "dependencies": {
-    "@google-cloud/kms": "^2.8.1",
+    "@google-cloud/kms": "^2.9.0",
     "fast-crc32c": "^2.0.0",
     "jslint": "^0.12.1"
   },