Update changelog for beta (#53944)

Author: rhurey

sdk/ai/Azure.AI.VoiceLive/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 1.1.0-beta.1 (Unreleased)
+## 1.1.0-beta.1 (2025-11-14)
 
 ### Features Added
 
@@ -14,10 +14,6 @@
   - Unified event listener experience works alongside Azure.Core HTTP logging
 - **Enhanced Samples**: Added `ContentLoggingSample.cs` and `UnifiedEventListener.cs` demonstrating WebSocket content logging integration
 
-### Breaking Changes
-
-### Bugs Fixed
-
 ### Other Changes
 
 - Updated test infrastructure with comprehensive content logging test coverage