chore(deps): update mstest to v4 (#3327)

Co-authored-by: Renovate Bot <[email protected]>

Author: thomhurst

Directory.Packages.props

@@ -48,8 +48,8 @@
     <PackageVersion Include="ModularPipelines.DotNet" Version="2.47.8" />
     <PackageVersion Include="ModularPipelines.Git" Version="2.47.8" />
     <PackageVersion Include="ModularPipelines.GitHub" Version="2.47.8" />
-    <PackageVersion Include="MSTest.TestAdapter" Version="3.11.0" />
-    <PackageVersion Include="MSTest.TestFramework" Version="3.11.0" />
+    <PackageVersion Include="MSTest.TestAdapter" Version="4.0.0" />
+    <PackageVersion Include="MSTest.TestFramework" Version="4.0.0" />
     <PackageVersion Include="NSubstitute" Version="5.3.0" />
     <PackageVersion Include="NuGet.Protocol" Version="6.14.0" />
     <PackageVersion Include="NUnit" Version="4.4.0" />