Bump Verify.XunitV3 from 28.3.2 to 28.4.0 in /src (#269)

Author: dependabot[bot]

src/Directory.Packages.props

@@ -11,7 +11,7 @@
     <PackageVersion Include="ProjectDefaults" Version="1.0.144" />
     <PackageVersion Include="Verify" Version="28.4.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageVersion Include="Verify.XunitV3" Version="28.3.2" />
+    <PackageVersion Include="Verify.XunitV3" Version="28.4.0" />
     <PackageVersion Include="xunit.v3" Version="0.6.0-pre.7" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.0-pre.49" />
   </ItemGroup>