Update changelog for 1.21.0 release (#37635)

kingernupur · web-flow · commit 0f0fcba3ba37 · 2024-09-30T17:39:20.000+05:30
diff --git a/sdk/ml/azure-ai-ml/CHANGELOG.md b/sdk/ml/azure-ai-ml/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release History
 
-## 1.21.0 (unreleased)
+## 1.21.0 (2024-09-30)
 
 ### Features Added
   - Cross subscription storage account support for workspace and feature store. Developer can provide a storage account from another subscription while creating a workspace or storage account.
