Bump YamlDotNet from 15.1.2 to 15.1.4 (#270)

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 15.1.2 to 15.1.4.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Commits](aaubry/YamlDotNet@v15.1.2...v15.1.4)

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

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

Directory.Packages.props

@@ -35,6 +35,6 @@
     <PackageVersion Include="xunit" Version="2.8.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.0" />
     <PackageVersion Include="Xunit.SkippableFact" Version="1.4.13" />
-    <PackageVersion Include="YamlDotNet" Version="15.1.2" />
+    <PackageVersion Include="YamlDotNet" Version="15.1.4" />
   </ItemGroup>
 </Project>