Bump Verify.Xunit from 26.6.0 to 28.13.0

Bumps [Verify.Xunit](https://github.com/VerifyTests/Verify) from 26.6.0 to 28.13.0.
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@26.6.0...28.13.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

test/RouteLink.Generators.Tests/RouteLink.Generators.Tests.csproj

@@ -21,7 +21,7 @@
     <PackageReference Include="FluentAssertions" Version="8.1.1" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="[4.4.0]" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
-    <PackageReference Include="Verify.Xunit" Version="26.6.0" />
+    <PackageReference Include="Verify.Xunit" Version="28.13.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.2">
       <PrivateAssets>all</PrivateAssets>