Update CHANGELOG.md (Azure#32297)

Author: mrm9084

sdk/appconfiguration/azure-appconfiguration-provider/CHANGELOG.md

@@ -1,19 +1,15 @@
 # Release History
 
-## 1.1.0b2 (Unreleased)
+## 1.1.0b2 (2023-09-29)
 
 ### Features Added
 
 * Added support for `keyvault_credential`, `keyvault_client_configs`, and `secret_resolver` as `kwargs` instead of using `AzureAppConfigurationKeyVaultOptions`.
 
-### Breaking Changes
-
 ### Bugs Fixed
 
 * Fixes issue where `user_agent` was required to be set.
 
-### Other Changes
-
 ## 1.1.0b1 (2023-09-13)
 
 ### Features Added