Update ADT version to release 1.6.0 (Azure#50383)

* Update ADT version to release 1.6.0

* update changelog.md

Author: Vidyashreebn

sdk/digitaltwins/Azure.DigitalTwins.Core/CHANGELOG.md

@@ -1,6 +1,9 @@
 # Release History
 
-## 1.6.0-beta.1 (Unreleased)
+## 1.6.0 (2025-06-10)
+
+### Features Added
+- Updated service API version to use API version 2023-10-31 by default.
 
 ### Breaking changes
 
@@ -14,11 +17,6 @@
   - `eventRouteId` to `az.digitaltwins.event_route.id`
   - `messageId` to `az.digitaltwins.message.id`
 
-- ## 1.6.0 (2025-01-05)
-
-### Features Added
-- Updated service API version to use API version 2023-10-31 by default.
-
 ## 1.5.0 (2023-09-07)
 
 ### Features Added

sdk/digitaltwins/Azure.DigitalTwins.Core/src/Azure.DigitalTwins.Core.csproj

@@ -13,7 +13,7 @@
     <PackageTags>IoT;DigitalTwins;$(PackageCommonTags)</PackageTags>
     <DisableEnhancedAnalysis>true</DisableEnhancedAnalysis>
     <Description>SDK for the Azure Digital Twins service</Description>
-    <Version>1.6.0-beta.1</Version>
+    <Version>1.6.0</Version>
     <!--The ApiCompatVersion is managed automatically and should not generally be modified manually.-->
     <ApiCompatVersion>1.4.0</ApiCompatVersion>
   </PropertyGroup>