Bump MSTest.TestFramework from 2.2.8 to 3.2.0 in /tests/.dependabot (#54

)

Bumps [MSTest.TestFramework](https://github.com/microsoft/testfx) from 2.2.8 to 3.2.0.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Changelog](https://github.com/microsoft/testfx/blob/main/docs/Changelog.md)
- [Commits](microsoft/testfx@v2.2.8...v.3.2.0)

---
updated-dependencies:
- dependency-name: MSTest.TestFramework
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

tests/tests.ghulproj

@@ -7,7 +7,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
-    <PackageReference Include="MSTest.TestFramework" Version="2.2.8" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.2.0" />
 
     <PackageReference Include="ghul.targets" Version="1.2.1" />
     <PackageReference Include="ghul.pipes" Version="1.0.0" />