Bump YamlDotNet from 13.7.1 to 15.1.0

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 13.7.1 to 15.1.0.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Commits](aaubry/YamlDotNet@v13.7.1...v15.1.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

src/GqlPlus.Verifier/GqlPlus.Verifier.csproj

@@ -2,6 +2,6 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.0" />
-    <PackageReference Include="YamlDotNet" Version="13.7.1" />
+    <PackageReference Include="YamlDotNet" Version="15.1.0" />
   </ItemGroup>
 </Project>