Update CsWinRTExeTFM for .NET 7 and .NET 8

Author: Sergio0694

nuget/Microsoft.Windows.CsWinRT.targets

@@ -160,7 +160,9 @@ Copyright (C) Microsoft Corporation. All rights reserved.
       <CsWinRTEmbeddedProjection Condition="'$(CsWinRTEmbedded)' == 'true'">-embedded</CsWinRTEmbeddedProjection>
       <CsWinRTEmbeddedEnums Condition="'$(CsWinRTEmbeddedPublicEnums)' == 'true'">-public_enums</CsWinRTEmbeddedEnums>
       <CsWinRTExeTFM Condition="$([MSBuild]::GetTargetFrameworkVersion('$(TargetFramework)')) == 5">net5.0</CsWinRTExeTFM>
-      <CsWinRTExeTFM Condition="$([MSBuild]::GetTargetFrameworkVersion('$(TargetFramework)')) > 5">net6.0</CsWinRTExeTFM>
+      <CsWinRTExeTFM Condition="$([MSBuild]::GetTargetFrameworkVersion('$(TargetFramework)')) == 6">net6.0</CsWinRTExeTFM>
+      <CsWinRTExeTFM Condition="$([MSBuild]::GetTargetFrameworkVersion('$(TargetFramework)')) == 7">net7.0</CsWinRTExeTFM>
+      <CsWinRTExeTFM Condition="$([MSBuild]::GetTargetFrameworkVersion('$(TargetFramework)')) == 8">net8.0</CsWinRTExeTFM>
       <CsWinRTExeTFM Condition="'$(CsWinRTExeTFM)' == ''">netstandard2.0</CsWinRTExeTFM>
 
       <CsWinRTParams Condition="'$(CsWinRTParams)' == ''">