use published native_toolchain_c (required by pub.dev for publication)

thermion_dart/pubspec.yaml

@@ -1,7 +1,8 @@
 name: thermion_dart
 description: 3D rendering toolkit for Dart.
-version: 0.0.1
-homepage:
+version: 0.0.1-pre2
+homepage: https://docs.page/nmfisher/thermion
+repository: https://github.com/nmfisher/flutter_filament
 
 environment:
   sdk: ">=3.3.0 <4.0.0"
@@ -9,15 +10,11 @@ environment:
 dependencies:
   vector_math: ^2.1.2
   plugin_platform_interface: ^2.0.0
-  tuple:
-  ffi:
+  ffi: ^2.1.2
   animation_tools_dart: ^0.0.4
-  native_toolchain_c:
-    git:
-      url: git@github.com:nmfisher/native.git
-      path: pkgs/native_toolchain_c
-      ref: 99020084c4687be4c58c7115a167088c0441d1de
+  native_toolchain_c: ^0.4.2
   archive: ^3.6.1
+  web: ^0.5.1
 
 dev_dependencies:
   ffigen: ^11.0.0