build(deps): bump MSTest.TestAdapter from 2.2.7 to 3.7.1

Bumps [MSTest.TestAdapter](https://github.com/microsoft/testfx) from 2.2.7 to 3.7.1.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Changelog](https://github.com/microsoft/testfx/blob/main/docs/Changelog.md)
- [Commits](microsoft/testfx@v2.2.7...v3.7.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Test/Test.csproj

@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
     <PackageReference Include="MSTest.TestFramework" Version="2.2.7" />
-    <PackageReference Include="MSTest.TestAdapter" Version="2.2.7" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.7.1" />
     <PackageReference Include="LibGit2Sharp" Version="0.27.0-preview-0182" />
     <PackageReference Include="NSubstitute" Version="4.2.2" />
   </ItemGroup>