chore: release 2.8.1 (#399)

🤖 I have created a release \*beep\* \*boop\*
---
### [2.8.1](https://www.github.com/googleapis/python-dialogflow/compare/v2.8.0...v2.8.1) (2021-09-29)


### Bug Fixes

* add 'dict' annotation type to 'request' ([12b4f60](https://www.github.com/googleapis/python-dialogflow/commit/12b4f6050d0b5f741f106798643bef6ebbbe1e28))

---


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 +4,13 @@
 
 [1]: https://pypi.org/project/dialogflow/#history
 
+### [2.8.1](https://www.github.com/googleapis/python-dialogflow/compare/v2.8.0...v2.8.1) (2021-09-29)
+
+
+### Bug Fixes
+
+* add 'dict' annotation type to 'request' ([12b4f60](https://www.github.com/googleapis/python-dialogflow/commit/12b4f6050d0b5f741f106798643bef6ebbbe1e28))
+
 ## [2.8.0](https://www.github.com/googleapis/python-dialogflow/compare/v2.7.1...v2.8.0) (2021-09-08)
 
 

setup.py

@@ -19,7 +19,7 @@
 
 name = "dialogflow"
 description = "Client library for the Dialogflow API"
-version = "2.8.0"
+version = "2.8.1"
 release_status = "Development Status :: 5 - Production/Stable"
 dependencies = [
     # NOTE: Maintainers, please do not require google-api-core>=2.x.x