chore(deps): bump xunit from 2.8.1 to 2.9.0 in the xunit group (#174)

Author: dependabot[bot]

Directory.Packages.props

@@ -17,7 +17,7 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
     <PackageVersion Include="NetEvolve.Extensions.XUnit" Version="2.2.12" />
     <PackageVersion Include="Polyfill" Version="5.6.0" />
-    <PackageVersion Include="xunit" Version="2.8.1" />
+    <PackageVersion Include="xunit" Version="2.9.0" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net5.0' Or '$(TargetFramework)' == 'netcoreapp3.1' ">