Update release branch changelog [1.23.0] (#38891)

* update changelog

* remove empty section

Author: PratibhaShrivastav18

sdk/ml/azure-ai-ml/CHANGELOG.md

@@ -1,5 +1,5 @@
 # Release History
-## 1.23.0 (unreleased)
+## 1.23.0 (2024-12-05)
 
 ### Features Added
   - Added support for IP-based access control to default and hub workspaces. 
@@ -12,8 +12,6 @@
     - Azure Blob Storage
     - Microsoft OneLake
 
-### Bugs Fixed
-
 ## 1.22.3 (2024-11-20)
 
 ### Bugs Fixed