Bump Verify.Xunit from 28.11.0 to 28.12.0

Bumps [Verify.Xunit](https://github.com/VerifyTests/Verify) from 28.11.0 to 28.12.0.
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@28.11.0...28.12.0)

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

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

Author: dependabot[bot]

Directory.Packages.props

@@ -19,7 +19,7 @@ SPDX-License-Identifier: MIT
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageVersion Include="QuikGraph" Version="2.5.0" />
     <PackageVersion Include="QuikGraph.Graphviz" Version="2.5.0" />
-    <PackageVersion Include="Verify.Xunit" Version="28.11.0" />
+    <PackageVersion Include="Verify.Xunit" Version="28.12.0" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.assert" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.0" />