Fix the following signing error

Unknown assemblies:
      C:\A\1\_temp\artifact-signing\extracted\Xamarin.LibZipSharp.2.0.0-alpha\runtimes\win-x64\native\libZipSharpNative.dll;
      C:\A\1\_temp\artifact-signing\extracted\Xamarin.LibZipSharp.2.0.0-alpha\runtimes\win-x86\native\libZipSharpNative.dll

Author: dellis1972

SignList.xml

@@ -2,6 +2,7 @@
 
    <ItemGroup>
      <FirstParty Include="libZipSharp.*" />
+     <FirstParty Include="libZipSharpNative.*" />
      <FirstParty Include="libzip.*" />
    </ItemGroup>