Increment version for deviceupdate releases (Azure#19214)

Increment package version after release of Azure.Iot.DeviceUpdate

Author: azure-sdk

sdk/deviceupdate/Azure.Iot.DeviceUpdate/CHANGELOG.md

@@ -1,4 +1,7 @@
 # Release History
 
+## 1.0.0-beta.2 (Unreleased)
+
+
 ## 1.0.0-beta.1 (2021-03-03)
 * This is the initial release of Azure Device Update for IoT Hub library. 

sdk/deviceupdate/Azure.Iot.DeviceUpdate/src/Azure.Iot.DeviceUpdate.csproj

@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyTitle>Device Update for IoT Hub client library</AssemblyTitle>
-    <Version>1.0.0-beta.1</Version>
+    <Version>1.0.0-beta.2</Version>
     <Description>
       This is the Device Update for IoT Hub client library for developing .NET applications with rich experience.
     </Description>