Increment version for digitaltwins releases (Azure#18430)

Increment package version after release of Azure.DigitalTwins.Core

Author: azure-sdk

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

@@ -1,5 +1,8 @@
 # Release History
 
+## 1.3.0-beta.1 (Unreleased)
+
+
 ## 1.2.1 (2021-02-03)
 
 ### Fixes and improvements
@@ -68,7 +71,7 @@ Note that these breaking changes are only breaking changes from the **preview**
 - Type definitions in Azure.DigitalTwins.Core.Models namespace moved to Azure.DigitalTwins.Core.
 - `CreateModelsAsync` and `CreateModels` APIs now return `Response<ModelData[]>` instead of `Response<IReadOnlyList<ModelData>>`.
 
-## 1.0.0-preview.2
+## 1.0.0-preview.2 
 
 ### New features
 

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

@@ -13,8 +13,8 @@
   <PropertyGroup>
     <PackageTags>IoT;DigitalTwins;$(PackageCommonTags)</PackageTags>
     <Description>SDK for the Azure Digital Twins service</Description>
-    <Version>1.2.1</Version>
-    <ApiCompatVersion>1.2.0</ApiCompatVersion>
+    <Version>1.3.0-beta.1</Version>
+    <ApiCompatVersion>1.2.1</ApiCompatVersion>
   </PropertyGroup>
 
   <ItemGroup>