Fix System.Data.SQLite package reference

The non-core package depends on Entity Framework when installing on
.NET Framework platforms

Author: peetw

NHibernate.Spatial.SpatiaLite/NHibernate.Spatial.SpatiaLite.csproj

@@ -17,7 +17,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" />
     <PackageReference Include="NetTopologySuite.IO.SpatiaLite" Version="2.0.0" />
-    <PackageReference Include="System.Data.SQLite" Version="1.0.118" />
+    <PackageReference Include="System.Data.SQLite.Core" Version="1.0.118" />
   </ItemGroup>
 
   <ItemGroup>