Prepare @azure/communication-identity 1.2.0-beta.2 release (Azure#21126)

* changelog update

* added release date

Author: petrsvihlik

sdk/communication/communication-identity/CHANGELOG.md

@@ -1,17 +1,11 @@
 # Release History
 
-## 1.1.0-beta.2 (Unreleased)
+## 1.1.0-beta.2 (2022-04-05)
 
 ### Features Added
 
 - Migrated from using `@azure/core-http` to `@azure/core-rest-pipeline` for the handling of HTTP requests. See [Azure Core v1 vs v2](https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/core/core-rest-pipeline/documentation/core2.md) for more on the difference and benefits of the move.
 
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
-
 ## 1.1.0-beta.1 (2021-10-29)
 
 ### Features Added