refs and cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -6,7 +6,7 @@
   <ItemGroup>
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="28.2.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
-    <PackageVersion Include="Polyfill" Version="10.5.1" />
+    <PackageVersion Include="Polyfill" Version="10.6.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.174" />
     <PackageVersion Include="Verify" Version="31.16.3" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
@@ -16,7 +16,7 @@
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.5" />
     <PackageVersion Include="Microsoft.Extensions.Caching.Memory" Version="10.0.8" />
-    <PackageVersion Include="Argon" Version="0.33.5" />
+    <PackageVersion Include="Argon" Version="0.34.0" />
     <PackageVersion Include="DiffEngine" Version="19.2.0" />
     <PackageVersion Include="EmptyFiles" Version="8.18.1" />
     <PackageVersion Include="SimpleInfoName" Version="3.2.0" />