Use ActivityParameters widgets from flutter_custom_toolbox

pubspec.yaml

@@ -3,7 +3,7 @@ description: MIDI Synth
 
 publish_to: "none"
 
-version: 0.3.2+18
+version: 0.4.0+19
 
 environment:
   sdk: "^3.0.0"
@@ -16,7 +16,7 @@ dependencies:
   flutter_custom_toolbox:
     git:
       url: https://git.harrault.fr/android/flutter-toolbox.git
-      ref: 0.4.0
+      ref: 0.5.0
 
   # specific
   # (none)