Update pubspec.yaml

Pubspec updated.

Author: Indumathi1195R

pubspec.yaml

@@ -14,7 +14,7 @@ description: A new Flutter application.
 version: 1.0.0+1
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.12.0 <3.0.0"
 
 dependencies:
   flutter:
@@ -23,13 +23,13 @@ dependencies:
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^0.1.3
+  cupertino_icons: ^1.0.2
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  syncfusion_flutter_calendar: 18.2.46+1
-    
+  syncfusion_flutter_calendar: ^19.1.56
+
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec