Update Directory.Packages.props

Author: SimonCropp

src/Directory.Packages.props

@@ -15,6 +15,7 @@
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="27.0.2" />
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="9.0.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" />
+    <!-- https://learn.microsoft.com/en-us/visualstudio/extensibility/roslyn-version-support?view=vs-2022 -->
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.9.2" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />