fix: move flutter and test to dependencies

fixes an issue with custom_lint when running dart aot runtime in pana's
context during pub analysis

Author: andrew-bekhiet-solid

pubspec.yaml

@@ -17,10 +17,10 @@ dependencies:
   glob: ^2.1.3
   path: ^1.9.1
   yaml: ^3.1.3
-
-dev_dependencies:
-  args: ^2.6.0
   # These packages are mandatory for some of tests
   flutter:
     sdk: flutter
   test: ^1.25.14
+
+dev_dependencies:
+  args: ^2.6.0