Bump Verify.XUnit from 27.1.0 to 28.1.0 in the verify group (#127)

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


Updates `Verify.XUnit` from 27.1.0 to 28.1.0
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@27.1.0...28.1.0)

---
updated-dependencies:
- dependency-name: Verify.XUnit
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: verify
...

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

src/GitReader.SourceGenerator.Tests/GitReader.SourceGenerator.Tests.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
     <PackageReference Include="System.Text.Json" Version="8.0.5" />
-    <PackageReference Include="Verify.XUnit" Version="27.1.0" />
+    <PackageReference Include="Verify.XUnit" Version="28.1.0" />
     <PackageReference Include="Verify.SourceGenerators" Version="2.5.0" />
     <PackageReference Include="xunit" Version="2.9.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">