Bump the xunit group with 1 update

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

- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](https://github.com/VerifyTests/Verify/commits/22.6.0)

---
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>

Tests/Approval.Tests/Approval.Tests.csproj

@@ -13,7 +13,7 @@
     </PackageReference>
     <PackageReference Include="PublicApiGenerator" Version="11.0.0" />
     <PackageReference Include="Verify.DiffPlex" Version="2.3.0" />
-    <PackageReference Include="Verify.Xunit" Version="22.5.0" />
+    <PackageReference Include="Verify.Xunit" Version="22.6.0" />
   </ItemGroup>
 
 </Project>