chore(deps): update dependency microsoft.net.test.sdk to v17.9.0 (#302)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Directory.build.props

@@ -34,7 +34,7 @@
 	</PropertyGroup>
 
 	<ItemGroup Condition="$(IsTestProject)">
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
 		<PackageReference Include="xunit" Version="2.6.2" />
 		<PackageReference Include="xunit.runner.console" Version="2.6.2" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.4" />