chore: release 2.8.0 (#236)

🤖 I have created a release \*beep\* \*boop\*
---
## [2.8.0](https://www.github.com/googleapis/python-speech/compare/v2.7.0...v2.8.0) (2021-08-19)


### Features

* Add transcript normalization ([#235](https://www.github.com/googleapis/python-speech/issues/235)) ([f76effc](https://www.github.com/googleapis/python-speech/commit/f76effc3c5477db858571d89c5b52078e85ff94e))


### Documentation

* **samples:** remove io dependency in transcribe samples ([#223](https://www.github.com/googleapis/python-speech/issues/223)) ([928ca3a](https://www.github.com/googleapis/python-speech/commit/928ca3aeb8f8665dedfa7663c56ee3bb464481cd))
---


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-speech/#history
 
+## [2.8.0](https://www.github.com/googleapis/python-speech/compare/v2.7.0...v2.8.0) (2021-08-19)
+
+
+### Features
+
+* Add transcript normalization ([#235](https://www.github.com/googleapis/python-speech/issues/235)) ([f76effc](https://www.github.com/googleapis/python-speech/commit/f76effc3c5477db858571d89c5b52078e85ff94e))
+
+
+### Documentation
+
+* **samples:** remove io dependency in transcribe samples ([#223](https://www.github.com/googleapis/python-speech/issues/223)) ([928ca3a](https://www.github.com/googleapis/python-speech/commit/928ca3aeb8f8665dedfa7663c56ee3bb464481cd))
+
 ## [2.7.0](https://www.github.com/googleapis/python-speech/compare/v2.6.0...v2.7.0) (2021-08-10)
 
 

setup.py

@@ -22,7 +22,7 @@
 
 name = "google-cloud-speech"
 description = "Google Cloud Speech API client library"
-version = "2.7.0"
+version = "2.8.0"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'