chore: release 2.9.1 (#226)

🤖 I have created a release \*beep\* \*boop\*
---
### [2.9.1](https://www.github.com/googleapis/python-texttospeech/compare/v2.9.0...v2.9.1) (2022-01-08)


### Documentation

* Added virtualenv comment for clarity ([#225](https://www.github.com/googleapis/python-texttospeech/issues/225)) ([61a7fce](https://www.github.com/googleapis/python-texttospeech/commit/61a7fcec0611712cdb1692b830db4aaca4d411b0))
* update comments for ListVoicesRequest ([#229](https://www.github.com/googleapis/python-texttospeech/issues/229)) ([9ea340c](https://www.github.com/googleapis/python-texttospeech/commit/9ea340cee20298630a6a15bed0ed2df9f69b3d13))
---


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 +4,14 @@
 
 [1]: https://pypi.org/project/google-cloud-texttospeech/#history
 
+### [2.9.1](https://www.github.com/googleapis/python-texttospeech/compare/v2.9.0...v2.9.1) (2022-01-08)
+
+
+### Documentation
+
+* Added virtualenv comment for clarity ([#225](https://www.github.com/googleapis/python-texttospeech/issues/225)) ([61a7fce](https://www.github.com/googleapis/python-texttospeech/commit/61a7fcec0611712cdb1692b830db4aaca4d411b0))
+* update comments for ListVoicesRequest ([#229](https://www.github.com/googleapis/python-texttospeech/issues/229)) ([9ea340c](https://www.github.com/googleapis/python-texttospeech/commit/9ea340cee20298630a6a15bed0ed2df9f69b3d13))
+
 ## [2.9.0](https://www.github.com/googleapis/python-texttospeech/compare/v2.8.0...v2.9.0) (2021-11-16)
 
 

setup.py

@@ -35,7 +35,7 @@
 
 name = "google-cloud-texttospeech"
 description = "Google Cloud Text-to-Speech API client library"
-version = "2.9.0"
+version = "2.9.1"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'