Bump Microsoft.NET.Test.Sdk from 17.8.0 to 17.9.0

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.8.0 to 17.9.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md)
- [Commits](microsoft/vstest@v17.8.0...v17.9.0)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Directory.Packages.props

@@ -37,7 +37,7 @@
         <PackageVersion Include="Microsoft.CodeAnalysis.CSharp"
                         Version="4.8.0" />
         <PackageVersion Include="Microsoft.NET.Test.Sdk"
-                        Version="17.8.0" />
+                        Version="17.9.0" />
         <PackageVersion Include="NuGet.Versioning"
                         Version="6.8.0" />
         <PackageVersion Include="OmniSharp.Extensions.LanguageServer"