Bump YamlDotNet from 12.1.0 to 12.2.1

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 12.1.0 to 12.2.1.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Commits](https://github.com/aaubry/YamlDotNet/compare/v12.1.0...v12.2.1)

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

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

SupportChild/SupportChild.csproj

@@ -39,7 +39,7 @@
       <PackageReference Include="Superpower" Version="3.0.0" />
       <PackageReference Include="Tyrrrz.Extensions" Version="1.6.5" />
       <PackageReference Include="WebMarkupMin.Core" Version="2.13.0" />
-      <PackageReference Include="YamlDotNet" Version="12.1.0" />
+      <PackageReference Include="YamlDotNet" Version="12.2.1" />
     </ItemGroup>
 
     <ItemGroup>