Update Changelog for 0b6 release (#34192)

Author: luigiw

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

@@ -1,15 +1,11 @@
 # Release History
 
-## 1.0.0b6 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
-
-### Bugs Fixed
+## 1.0.0b6 (2024-02-06)
 
 ### Other Changes
 
+- Bug fixes
+
 ## 1.0.0b5 (2024-02-02)
 
 ### Features Added

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

@@ -1,15 +1,11 @@
 # Release History
 
-## 1.0.0b6 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
-
-### Bugs Fixed
+## 1.0.0b6 (2024-02-06)
 
 ### Other Changes
 
+- Bug fixes
+
 ## 1.0.0b5 (2024-02-01)
 
 ### Other Changes