Update pubspec.yaml

Pubspec updated.

Author: Indumathi1195R

pubspec.yaml

@@ -1,6 +1,5 @@
 name: flutter_firebase_calendar
 description: A new Flutter application.
-
 # The following defines the version and build number for your application.
 # A version number is three numbers separated by dots, like 1.2.43
 # followed by an optional build number separated by a +.
@@ -12,49 +11,38 @@ description: A new Flutter application.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 version: 1.0.0+1
-
 environment:
-  sdk: ">=2.1.0 <3.0.0"
-
+  sdk: ">=2.12.0 <3.0.0"
 dependencies:
   flutter:
     sdk: flutter
-  syncfusion_flutter_calendar: 18.3.50
-  firebase_core: "^0.5.0"
-  cloud_firestore: ^0.14.0+1
-  firebase_database: 4.0.0
-
+  syncfusion_flutter_calendar: ^19.1.59
+  firebase_core: ^1.1.0
+  cloud_firestore: ^2.0.0
+  firebase_database: ^6.1.2
 
   # 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: ^1.0.3
 dev_dependencies:
   flutter_test:
     sdk: flutter
-
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
-
 # The following section is specific to Flutter.
 flutter:
-
   # The following line ensures that the Material Icons font is
   # included with your application, so that you can use the icons in
   # the material Icons class.
-  uses-material-design: true
-
+uses-material-design: true
   # To add assets to your application, add an assets section, like this:
   # assets:
   #   - images/a_dot_burr.jpeg
   #   - images/a_dot_ham.jpeg
-
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.dev/assets-and-images/#resolution-aware.
-
   # For details regarding adding assets from package dependencies, see
   # https://flutter.dev/assets-and-images/#from-packages
-
   # To add custom fonts to your application, add a fonts section here,
   # in this "flutter" section. Each entry in this list should have a
   # "family" key with the font family name, and a "fonts" key with a