Bump YamlDotNet from 13.4.0 to 13.7.1 (#353)

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 13.4.0 to 13.7.1.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Commits](aaubry/YamlDotNet@v13.4.0...v13.7.1)

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

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

tools/MatrixHelper/MatrixHelper.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="YamlDotNet" Version="13.4.0" />
+    <PackageReference Include="YamlDotNet" Version="13.7.1" />
   </ItemGroup>
 
   <!-- Reference MinVer so the locally built NuGet version is available when building test applications -->