build(deps): bump Verify.Xunit from 21.2.0 to 21.3.0 (#9254)

Bumps [Verify.Xunit](https://github.com/VerifyTests/Verify) from 21.2.0 to 21.3.0.
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](https://github.com/VerifyTests/Verify/commits/21.3.0)

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

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

Author: dependabot[bot]

Directory.Packages.props

@@ -44,7 +44,7 @@
     <PackageVersion Include="NuGet.Frameworks" Version="6.8.0-rc.122" Condition="'$(TargetFramework)' != 'net8.0'"  />
     <PackageVersion Include="NuGet.Frameworks" Version="6.8.0-rc.122" Condition="'$(TargetFramework)' == 'net8.0'"  />
     <PackageVersion Include="Verify.DiffPlex" Version="2.2.1" />
-    <PackageVersion Include="Verify.Xunit" Version="21.2.0" />
+    <PackageVersion Include="Verify.Xunit" Version="21.3.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.1" />
     <PackageVersion Include="xunit" Version="2.5.1" />
   </ItemGroup>