Bump the test-dependencies group with 1 update (#393)

Bumps the test-dependencies group with 1 update: [MSTest.TestAdapter](https://github.com/microsoft/testfx).


Updates `MSTest.TestAdapter` from 3.1.1 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@v3.1.1...v.3.2.0)

---
updated-dependencies:
- dependency-name: MSTest.TestAdapter
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: test-dependencies
...

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Author: dependabot[bot]

src/ModularPipelines.Analyzers/ModularPipelines.Analyzers.Test/ModularPipelines.Analyzers.Test.csproj

@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.2.0" />
     <PackageReference Include="MSTest.TestFramework" Version="3.2.0" />
     <PackageReference Include="Microsoft.CodeAnalysis" Version="4.1.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.MSTest" Version="1.1.1" />