Bump xunit.runner.visualstudio from 2.5.3 to 2.5.6

Bumps [xunit.runner.visualstudio](https://github.com/xunit/visualstudio.xunit) from 2.5.3 to 2.5.6.
- [Release notes](https://github.com/xunit/visualstudio.xunit/releases)
- [Commits](xunit/visualstudio.xunit@2.5.3...2.5.6)

---
updated-dependencies:
- dependency-name: xunit.runner.visualstudio
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

CompressedStaticFiles.AspNet.Tests/CompressedStaticFiles.AspNet.Tests.csproj

@@ -15,7 +15,7 @@
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0-preview-23531-01" />
 		<PackageReference Include="NSubstitute" Version="5.1.0" />
 		<PackageReference Include="xunit" Version="2.6.1" />
-		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.3">
+		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>