update changelog for 1.2.2

Author: Zsailer

CHANGELOG.md

@@ -7,11 +7,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+
+## [1.2.2](https://github.com/jupyter-server/jupyter_server/tree/1.2.2) (2021-01-14)
+
 **Merged pull requests:**
 
+- Apply missing ensure\_async to root session handler methods [\#386](https://github.com/jupyter-server/jupyter_server/pull/386) ([kevin-bates](https://github.com/kevin-bates))
+- Update changelog to 1.2.1 [\#385](https://github.com/jupyter-server/jupyter_server/pull/385) ([Zsailer](https://github.com/Zsailer))
+- Fix application exit [\#384](https://github.com/jupyter-server/jupyter_server/pull/384) ([afshin](https://github.com/afshin))
 - Replace secure\_write, is\_hidden, exists with jupyter\_core's [\#382](https://github.com/jupyter-server/jupyter_server/pull/382) ([kevin-bates](https://github.com/kevin-bates))
 - Add --autoreload flag [\#380](https://github.com/jupyter-server/jupyter_server/pull/380) ([afshin](https://github.com/afshin))
 
+
 ## [1.2.1](https://github.com/jupyter-server/jupyter_server/tree/1.2.1) (2021-01-08)
 
 [Full Changelog](https://github.com/jupyter-server/jupyter_server/compare/1.2.0...1.2.1)