Prepare release for Azure.ResourceManager.ResourceGraph (Azure#48686)

Author: live1206

sdk/resourcegraph/Azure.ResourceManager.ResourceGraph/CHANGELOG.md

@@ -1,17 +1,15 @@
 # Release History
 
-## 1.1.0-beta.3 (Unreleased)
+## 1.1.0-beta.3 (2025-03-11)
 
 ### Features Added
 
 - Enable the new model serialization by using the System.ClientModel, refer this [document](https://aka.ms/azsdk/net/mrw) for more details.
 - Exposed `JsonModelWriteCore` for model serialization procedure.
 
-### Breaking Changes
-
 ### Bugs Fixed
 
-### Other Changes
+- Set MaxDepth to 256 for json serialization options to handle json with more depth in https://github.com/Azure/azure-sdk-for-net/issues/48260
 
 ## 1.1.0-beta.2 (2023-11-21)