Bump YamlDotNet from 15.1.4 to 15.1.6 in /src (#116)

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 15.1.4 to 15.1.6.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Commits](aaubry/YamlDotNet@v15.1.4...v15.1.6)

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

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

src/DockerComposeBuilder.Examples.Complex/DockerComposeBuilder.Examples.Complex.csproj

@@ -13,7 +13,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="YamlDotNet" Version="15.1.4" />
+    <PackageReference Include="YamlDotNet" Version="15.1.6" />
   </ItemGroup>
 
 </Project>

src/DockerComposeBuilder/DockerComposeBuilder.csproj

@@ -19,7 +19,7 @@
 
   <ItemGroup>
     <PackageReference Include="PolySharp" Version="1.14.1" PrivateAssets="all" />
-    <PackageReference Include="YamlDotNet" Version="15.1.4" />
+    <PackageReference Include="YamlDotNet" Version="15.1.6" />
   </ItemGroup>
 
   <ItemGroup>