STG 96 beta changelogs (Azure#46451)

* STG 96 beta changelogs

* PR comments

Author: seanmcc-msft

sdk/storage/Azure.Storage.Blobs.Batch/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 12.20.0-beta.1 (Unreleased)
+## 12.20.0-beta.1 (2024-10-08)
 
 ### Features Added
 - Added support for service version 2025-01-05.

sdk/storage/Azure.Storage.Blobs.ChangeFeed/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 12.0.0-preview.50 (Unreleased)
+## 12.0.0-preview.50 (2024-10-08)
 
 ### Features Added
 - Added support for service version 2025-01-05.

sdk/storage/Azure.Storage.Blobs/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 12.23.0-beta.1 (Unreleased)
+## 12.23.0-beta.1 (2024-10-08)
 
 ### Features Added
 - Added support for service version 2025-01-05.

sdk/storage/Azure.Storage.Common/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 12.22.0-beta.1 (Unreleased)
+## 12.22.0-beta.1 (2024-10-08)
 
 ### Features Added
 - This release contains bug fixes to improve quality.

sdk/storage/Azure.Storage.Files.DataLake/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 12.21.0-beta.1 (Unreleased)
+## 12.21.0-beta.1 (2024-10-08)
 
 ### Features Added
 - Added support for service version 2025-01-05.

sdk/storage/Azure.Storage.Files.Shares/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 12.21.0-beta.1 (Unreleased)
+## 12.21.0-beta.1 (2024-10-08)
 
 ### Features Added
 - Added support for service version 2025-01-05.

sdk/storage/Azure.Storage.Queues/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 12.21.0-beta.1 (Unreleased)
+## 12.21.0-beta.1 (2024-10-08)
 
 ### Features Added
 - Added support for service version 2025-01-05.