Bump MSTest (#45130)

Bumps the dotnet group in /docs/ai/quickstarts/snippets/evaluate-ai-responses with 1 update: [MSTest](https://github.com/microsoft/testfx).


Updates `MSTest` from 3.8.0 to 3.8.2
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Changelog](https://github.com/microsoft/testfx/blob/main/docs/Changelog.md)
- [Commits](microsoft/testfx@v3.8.0...v3.8.2)

---
updated-dependencies:
- dependency-name: MSTest
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
...

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

Author: dependabot[bot]

docs/ai/quickstarts/snippets/evaluate-ai-responses/TestAI.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.Extensions.AI.Evaluation.Quality" Version="9.3.0-preview.1.25126.9" />
     <PackageReference Include="Microsoft.Extensions.AI.Ollama" Version="9.3.0-preview.1.25114.11" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
-    <PackageReference Include="MSTest" Version="3.8.0" />
+    <PackageReference Include="MSTest" Version="3.8.2" />
   </ItemGroup>
 
   <ItemGroup>