Bump EmptyFiles package to 8.18.1 (#688)

Author: SimonCropp

src/Directory.Packages.props

@@ -5,7 +5,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="Argon" Version="0.33.5" />
-    <PackageVersion Include="EmptyFiles" Version="8.18.0" />
+    <PackageVersion Include="EmptyFiles" Version="8.18.1" />
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="28.2.0" />
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.5" />
     <PackageVersion Include="Polyfill" Version="10.3.0" />