build(deps): bump the xunit group with 1 update (dotnet#9778)

Bumps the xunit group with 1 update: [Verify.Xunit](https://github.com/VerifyTests/Verify).


Updates `Verify.Xunit` from 23.3.0 to 23.4.0
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@23.3.0...23.4.0)

---
updated-dependencies:
- dependency-name: Verify.Xunit
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: xunit
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Directory.Packages.props

@@ -37,7 +37,7 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageVersion Include="PublicApiGenerator" Version="11.1.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="2.3.0" />
-    <PackageVersion Include="Verify.Xunit" Version="23.3.0" />
+    <PackageVersion Include="Verify.Xunit" Version="23.4.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.7" />
     <PackageVersion Include="xunit" Version="2.7.0" />
   </ItemGroup>