chore: release 2.3.0 (#191)

🤖 I have created a release \*beep\* \*boop\*
---
## [2.3.0](https://www.github.com/googleapis/python-iot/compare/v2.2.1...v2.3.0) (2021-09-24)


### Bug Fixes

* add 'dict' annotation type to 'request' ([d4db051](https://www.github.com/googleapis/python-iot/commit/d4db0513a5beba7936d33f011bdf1a8ee831d425))

### Documentation

* Added python sample codes for cloud-iot-token-service generateAccessToken API ([#149](https://www.github.com/googleapis/python-iot/issues/149)) ([c2a575e](https://www.github.com/googleapis/python-iot/commit/c2a575e76b7fd2fb6da7954dcb6406933cc50bd1))

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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).

CHANGELOG.md

@@ -4,6 +4,18 @@
 
 [1]: https://pypi.org/project/google-cloud-iot/#history
 
+## [2.3.0](https://www.github.com/googleapis/python-iot/compare/v2.2.1...v2.3.0) (2021-09-24)
+
+
+### Bug Fixes
+
+* add 'dict' annotation type to 'request' ([d4db051](https://www.github.com/googleapis/python-iot/commit/d4db0513a5beba7936d33f011bdf1a8ee831d425))
+
+
+### Documentation
+
+* Added python sample codes for cloud-iot-token-service generateAccessToken API ([#149](https://www.github.com/googleapis/python-iot/issues/149)) ([c2a575e](https://www.github.com/googleapis/python-iot/commit/c2a575e76b7fd2fb6da7954dcb6406933cc50bd1))
+
 ### [2.2.1](https://www.github.com/googleapis/python-iot/compare/v2.2.0...v2.2.1) (2021-07-26)
 
 ### Bug Fixes

setup.py

@@ -19,7 +19,7 @@
 
 name = "google-cloud-iot"
 description = "Cloud IoT API API client library"
-version = "2.2.1"
+version = "2.3.0"
 release_status = "Development Status :: 5 - Production/Stable"
 dependencies = [
     # NOTE: Maintainers, please do not require google-api-core>=2.x.x