Bump MSTest.TestFramework from 3.1.1 to 3.2.1

Bumps [MSTest.TestFramework](https://github.com/microsoft/testfx) from 3.1.1 to 3.2.1.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Changelog](https://github.com/microsoft/testfx/blob/main/docs/Changelog.md)
- [Commits](microsoft/testfx@v3.1.1...v3.2.1)

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

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

ConfigAdapter.Test/ConfigAdapter.Test.csproj

@@ -16,7 +16,7 @@
     <PackageReference Include="FluentAssertions.Analyzers" Version="0.30.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.2.0" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.2.1" />
   </ItemGroup>
 
   <ItemGroup>