App Config - 1.9.0 Release (#47557)

* 1.9.0 Release

* api files

Author: mrm9084

sdk/appconfiguration/azure-appconfiguration/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 1.8.2 (Unreleased)
+## 1.9.0 (2026-06-18)
 
 ### Features Added
 
@@ -10,12 +10,6 @@
 - Added a `description` property to `ConfigurationSetting` and `SecretReferenceConfigurationSetting` representing the description of the key-value (requires API version `2026-04-01` or later).
 - Added a `description` property and a `description` keyword argument to `ConfigurationSnapshot`, and a `description` keyword argument to `begin_create_snapshot()` for both sync and async clients (requires API version `2026-04-01` or later).
 
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
-
 ## 1.8.1 (2026-05-07)
 
 ### Bugs Fixed