Bump xunit from 2.8.1 to 2.9.0

Bumps xunit from 2.8.1 to 2.9.0.

---
updated-dependencies:
- dependency-name: xunit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Directory.Packages.props

@@ -18,7 +18,7 @@
 	<PackageVersion Include="Scriban" Version="5.10.0" />
 	<PackageVersion Include="System.Linq.Async" Version="6.0.1" />
 	<PackageVersion Include="ThisAssembly.Resources" Version="1.4.3" />
-	<PackageVersion Include="xunit" Version="2.8.1" />
+	<PackageVersion Include="xunit" Version="2.9.0" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' != 'netcoreapp3.1' ">