Update pubspec.yaml

Author: jaffamonkey

pubspec.yaml

@@ -7,16 +7,16 @@ version: 1.0.0+1
 
 environment:
   sdk: '>=2.12.3 <3.0.0'
-  flutter: ">=3.0.0"
+  flutter: ">=2.2.0"
 
 dependencies:
   flutter:
     sdk: flutter
-  json_serializable: ^6.5.4
-  json_annotation: ^4.7.0
-  rxdart: ^0.27.7
-  shared_preferences: ^2.0.15
-  uuid: ^3.0.7
+  json_serializable: ^4.1.1
+  json_annotation: ^4.0.1
+  rxdart: ^0.26.0
+  shared_preferences: ^2.0.5
+  uuid: ^3.0.4
   flutter_simple_dependency_injection: ^2.0.0
 
 dev_dependencies:
@@ -25,7 +25,7 @@ dev_dependencies:
   integration_test:
     sdk: flutter
   build_runner:
-  flutter_gherkin: 3.0.0-rc.17
+  flutter_gherkin: 3.0.0-rc.2
 
 flutter: