Updated packages and version increse

pubspec.yaml

@@ -1,6 +1,6 @@
 name: pluto_grid_plus
 description: PlutoGrid plus is a maintained version of PlutoGrid, PlutoGrid is a dataGrid that can be controlled by the keyboard on desktop and web. Of course, it works well on Android and IOS. (DataGrid, DataTable, Data Grid, Data Table, Sticky)
-version: 8.4.3
+version: 8.4.4
 homepage: https://pluto.weblaze.dev
 repository: https://github.com/doonfrs/pluto_grid_plus
 
@@ -10,11 +10,8 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  # Follows the intl version included in Flutter.
-  # https://github.com/flutter/flutter/blob/84a1e904f44f9b0e9c4510138010edcc653163f8/packages/flutter_localizations/pubspec.yaml#L11
-  intl: ^0.20.0
   rxdart: ^0.28.0
-  collection: ^1.18.0
+  collection: ^1.19.0
 
 dev_dependencies:
   flutter_test: