chore(deps): update mstest monorepo to v4 (major) (#60)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

NCrontab.Advanced.Tests/NCrontab.Advanced.Tests.csproj

@@ -13,8 +13,8 @@
     <ProjectReference Include="..\NCrontab.Advanced\NCrontab.Advanced.csproj" />
     <PackageReference Include="JunitXml.TestLogger" Version="7.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.11.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.11.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="4.0.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="4.0.1" />
   </ItemGroup>
 
 </Project>