chore: release 2.5.2 (#173)

🤖 I have created a release \*beep\* \*boop\*
---
### [2.5.2](https://www.github.com/googleapis/python-texttospeech/compare/v2.5.1...v2.5.2) (2021-07-28)


### Bug Fixes

* enable self signed jwt for grpc ([#171](https://www.github.com/googleapis/python-texttospeech/issues/171)) ([9c1c437](https://www.github.com/googleapis/python-texttospeech/commit/9c1c4371caa712a749b406257c09d98f6b428e7b))


### Documentation

* add Samples section to CONTRIBUTING.rst ([#166](https://www.github.com/googleapis/python-texttospeech/issues/166)) ([053abe3](https://www.github.com/googleapis/python-texttospeech/commit/053abe3afc1107bdacd164e6ca4cd60b5ca07df7))


### Miscellaneous Chores

* release as 2.5.2 ([#172](https://www.github.com/googleapis/python-texttospeech/issues/172)) ([3804727](https://www.github.com/googleapis/python-texttospeech/commit/3804727995d0357fa0c4c5c246210768e0ce7124))
---


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 +4,23 @@
 
 [1]: https://pypi.org/project/google-cloud-texttospeech/#history
 
+### [2.5.2](https://www.github.com/googleapis/python-texttospeech/compare/v2.5.1...v2.5.2) (2021-07-28)
+
+
+### Bug Fixes
+
+* enable self signed jwt for grpc ([#171](https://www.github.com/googleapis/python-texttospeech/issues/171)) ([9c1c437](https://www.github.com/googleapis/python-texttospeech/commit/9c1c4371caa712a749b406257c09d98f6b428e7b))
+
+
+### Documentation
+
+* add Samples section to CONTRIBUTING.rst ([#166](https://www.github.com/googleapis/python-texttospeech/issues/166)) ([053abe3](https://www.github.com/googleapis/python-texttospeech/commit/053abe3afc1107bdacd164e6ca4cd60b5ca07df7))
+
+
+### Miscellaneous Chores
+
+* release as 2.5.2 ([#172](https://www.github.com/googleapis/python-texttospeech/issues/172)) ([3804727](https://www.github.com/googleapis/python-texttospeech/commit/3804727995d0357fa0c4c5c246210768e0ce7124))
+
 ### [2.5.1](https://www.github.com/googleapis/python-texttospeech/compare/v2.5.0...v2.5.1) (2021-07-20)
 
 

setup.py

@@ -35,7 +35,7 @@
 
 name = "google-cloud-texttospeech"
 description = "Google Cloud Text-to-Speech API client library"
-version = "2.5.1"
+version = "2.5.2"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'