prepare release for Azure.ResourceManager.DataProtectionBackup (Azure#40902)

Author: ArcturusZhang

sdk/dataprotection/Azure.ResourceManager.DataProtectionBackup/CHANGELOG.md

@@ -1,14 +1,10 @@
 # Release History
 
-## 1.4.0-beta.2 (Unreleased)
+## 1.4.0 (2023-12-27)
 
 ### Features Added
 
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
+- Stable version release for API version 2023-11-01.
 
 ## 1.4.0-beta.1 (2023-12-13)
 

sdk/dataprotection/Azure.ResourceManager.DataProtectionBackup/src/Azure.ResourceManager.DataProtectionBackup.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <Version>1.4.0-beta.2</Version>
+    <Version>1.4.0</Version>
     <!--The ApiCompatVersion is managed automatically and should not generally be modified manually.-->
     <ApiCompatVersion>1.3.0</ApiCompatVersion>
     <PackageId>Azure.ResourceManager.DataProtectionBackup</PackageId>