Update xunit packages

Manual update via #3499, but without the unwanted changes to the targets.

Author: martincostello

Directory.Packages.props

@@ -24,8 +24,8 @@
     <PackageVersion Include="ReportGenerator" Version="5.4.7" />
     <PackageVersion Include="Verify.XunitV3" Version="30.4.0" />
     <PackageVersion Include="xunit" Version="2.9.3" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.1" />
-    <PackageVersion Include="xunit.v3" Version="2.0.3" />
-    <PackageVersion Include="xunit.v3.extensibility.core" Version="2.0.3" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.2" />
+    <PackageVersion Include="xunit.v3" Version="3.0.0" />
+    <PackageVersion Include="xunit.v3.extensibility.core" Version="3.0.0" />
   </ItemGroup>
 </Project>