Use latest C++/WinRT in C++ project templates (#3729) (#3743)

(cherry picked from commit 9005d33)

Author: evelynwu-msft

dev/VSIX/Directory.Build.props

@@ -6,7 +6,7 @@
         <RestoreSources Condition="'$(RestoreSources)'==''">
             https://pkgs.dev.azure.com/microsoft/ProjectReunion/_packaging/Project.Reunion.nuget.internal/nuget/v3/index.json
         </RestoreSources>
-        <CppWinRTVersion Condition="'$(CppWinRTVersion)' == ''">2.0.220929.3</CppWinRTVersion>
+        <CppWinRTVersion Condition="'$(CppWinRTVersion)' == ''">2.0.230706.1</CppWinRTVersion>
         <WindowsSDKBuildToolsVersion Condition="'$(WindowsSDKBuildToolsVersion)' == ''">10.0.22621.755</WindowsSDKBuildToolsVersion>
         <WILVersion Condition="'$(WILVersion)' == ''">1.0.220914.1</WILVersion>
         <!-- Provides a default package version in order to simplify dev inner loop testing -->