Update xunit

Author: renovate[bot]

Directory.Packages.props

@@ -40,8 +40,8 @@
     <PackageVersion Include="System.ValueTuple" Version="4.5.0" />
     <PackageVersion Include="xunit.abstractions" Version="2.0.3" />
     <PackageVersion Include="Xunit.Combinatorial" Version="1.6.24" />
-    <PackageVersion Include="Xunit.SkippableFact" Version="1.4.13" />
-    <PackageVersion Include="Xunit.StaFact" Version="1.1.11" />
+    <PackageVersion Include="Xunit.SkippableFact" Version="1.5.23" />
+    <PackageVersion Include="Xunit.StaFact" Version="1.2.69" />
   </ItemGroup>
   <ItemGroup Condition="'$(IsTestProject)'=='true'">
     <PackageVersion Update="Microsoft.CodeAnalysis" Version="$(CodeAnalysisVersionForTests)" />