[CQA SDK] Add release date (#54274)

* add release date

* update

Author: Amichelangelo

sdk/cognitivelanguage/Azure.AI.Language.QuestionAnswering.Authoring/CHANGELOG.md

@@ -1,11 +1,12 @@
 # Release History
 
-## 1.0.0-beta.1 (Unreleased)
+## 1.0.0-beta.1 (2025-12-03)
 
 ### Features Added
 
-### Breaking Changes
+- Initial preview release of `Azure.AI.Language.QuestionAnswering.Authoring`.
+- Enables authoring and management of Question Answering projects.
 
-### Bugs Fixed
+### Other Changes
 
-### Other Changes
+- No additional changes.

sdk/cognitivelanguage/Azure.AI.Language.QuestionAnswering.Inference/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 1.0.0-beta.1 (Unreleased)
+## 1.0.0-beta.1 (2025-12-03)
 
 ### Features Added
 - Introduces standalone inference package for runtime Q&A.