upgrade: update required sdk version to >=2.17.0 on development

Author: wasabeef

packages/command/pubspec.yaml

@@ -8,7 +8,7 @@ documentation: https://github.com/FlutterGen/flutter_gen
 issue_tracker: https://github.com/FlutterGen/flutter_gen/issues
 
 environment:
-  sdk: '>=2.14.0 <3.0.0'
+  sdk: ">=2.17.0 <3.0.0"
 
 executables:
   fluttergen: flutter_gen_command

packages/core/pubspec.yaml

@@ -8,7 +8,7 @@ documentation: https://github.com/FlutterGen/flutter_gen
 issue_tracker: https://github.com/FlutterGen/flutter_gen/issues
 
 environment:
-  sdk: '>=2.14.0 <3.0.0'
+  sdk: ">=2.17.0 <3.0.0"
 
 version_gen:
   path: lib/

packages/runner/pubspec.yaml

@@ -8,7 +8,7 @@ documentation: https://github.com/FlutterGen/flutter_gen
 issue_tracker: https://github.com/FlutterGen/flutter_gen/issues
 
 environment:
-  sdk: '>=2.14.0 <3.0.0'
+  sdk: ">=2.17.0 <3.0.0"
 
 dependencies:
   flutter_gen_core: 5.2.0

pubspec.yaml

@@ -1,7 +1,7 @@
 name: flutter_gen_repository
 
 environment:
-  sdk: ">=2.18.0 <3.0.0"
+  sdk: ">=2.17.0 <3.0.0"
 
 dev_dependencies:
-  melos: ^3.0.1
+  melos: ^3.0.1