refs or cleanup

Author: SimonCropp

src/.editorconfig

@@ -3,7 +3,7 @@ root = true
 [*]
 indent_style = space
 end_of_line = lf
-insert_final_newline = false
+insert_final_newline = true
 
 [*.cs]
 indent_size = 4

src/Directory.Packages.props

@@ -6,8 +6,8 @@
   <ItemGroup>
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="28.0.0-beta.10" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
-    <PackageVersion Include="Polyfill" Version="9.3.4" />
-    <PackageVersion Include="ProjectDefaults" Version="1.0.166" />
+    <PackageVersion Include="Polyfill" Version="9.4.0" />
+    <PackageVersion Include="ProjectDefaults" Version="1.0.167" />
     <PackageVersion Include="System.Text.Json" Version="10.0.1" />
     <PackageVersion Include="Verify" Version="31.9.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />