Update TestProject.csproj

Author: Youssef1313

test/TestAssets/TestProjects/TestProjectSolutionWithCodeCoverage/TestProject/TestProject.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="MSTest.Sdk/3.9.3">
+<Project Sdk="MSTest.Sdk/4.0.0-preview.25506.5">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), testAsset.props))\testAsset.props" />
 
 	<PropertyGroup>
@@ -10,4 +10,4 @@
 
 	<!-- references to the code to test -->
 
-</Project>
+</Project>