[Search] 11.7.0-beta.3: preparing for release (Azure#49083)

Author: kinelski

sdk/search/Azure.Search.Documents/CHANGELOG.md

@@ -1,16 +1,11 @@
 # Release History
 
-## 11.7.0-beta.3 (Unreleased)
+## 11.7.0-beta.3 (2025-03-25)
 
 ### Features Added
+- Added support for the `GetIndexStatsSummary` API in `SearchIndexClient`.
 - Added extension methods to get `SearchClient`, `SearchIndexClient` and `SearchIndexerClient` using [AIProjectClient](https://learn.microsoft.com/dotnet/api/azure.ai.projects.aiprojectclient?view=azure-dotnet-preview).
 
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
-
 ## 11.7.0-beta.2 (2024-11-25)
 
 ### Features Added