Update xUnit packages (#583)

Co-authored-by: Renovate Bot <renovate@whitesourcesoftware.com>

Author: LombiqBot

Directory.Packages.props

@@ -44,7 +44,7 @@
     <PackageVersion Include="Shouldly" Version="4.3.0" />
     <PackageVersion Include="Stripe.net" Version="48.0.2" />
     <PackageVersion Include="System.Text.Json" Version="9.0.4" />
-    <PackageVersion Include="xunit.v3" Version="2.0.1" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.2" />
+    <PackageVersion Include="xunit.v3" Version="2.0.2" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.0" />
   </ItemGroup>
 </Project>