Bump MSTest.TestFramework from 2.1.1 to 2.1.2

Bumps [MSTest.TestFramework](https://github.com/microsoft/testfx) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Commits](microsoft/testfx@v2.1.1...v2.1.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Test/Test.csproj

@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="2.1.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.1.2" />
     <PackageReference Include="MSTest.TestAdapter" Version="2.1.2" />
     <PackageReference Include="LibGit2Sharp" Version="0.26.2" />
     <PackageReference Include="NSubstitute" Version="4.2.1" />