refs or cleanup

Author: SimonCropp

src/Directory.Packages.props

@@ -7,15 +7,15 @@
     <PackageVersion Include="AgileObjects.ReadableExpressions" Version="4.1.3" />
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="28.4.2" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.10.0" />
-    <PackageVersion Include="Polyfill" Version="11.2.0" />
+    <PackageVersion Include="Polyfill" Version="11.3.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.180" />
     <PackageVersion Include="Verify" Version="32.0.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.3.1" />
     <PackageVersion Include="Verify.XunitV3" Version="32.0.0" />
     <PackageVersion Include="xunit.v3" Version="4.0.0" />
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.5" />
     <PackageVersion Include="Argon" Version="0.36.0" />
-    <PackageVersion Include="DiffEngine" Version="20.2.2" />
+    <PackageVersion Include="DiffEngine" Version="20.3.0" />
     <PackageVersion Include="EmptyFiles" Version="8.18.2" />
     <PackageVersion Include="SimpleInfoName" Version="3.2.0" />
   </ItemGroup>