Get rid of publishing warnings

Maria-Bordunova · Maria-Bordunova · commit ad437beca681 · 2021-04-22T22:15:30.000+03:00
diff --git a/pubspec.yaml b/pubspec.yaml
@@ -6,13 +6,13 @@ repository: 'https://github.com/qonversion/flutter-sdk'
 
 environment:
   sdk: '>=2.12.0 <3.0.0'
-  flutter: ">=1.10.0 <3.0.0"
+  flutter: ">=1.10.0"
 
 dependencies:
   flutter:
     sdk: flutter
   json_annotation: ^4.0.1
-  collection: ^1.15.0-nullsafety.4
+  collection: ^1.15.0
 
 dev_dependencies:
   flutter_test:
