feat(create_dart_frog): upgrade to dart_frog ^0.2.0 (#380)

Author: felangel

bricks/create_dart_frog/__brick__/pubspec.yaml

@@ -7,7 +7,7 @@ environment:
   sdk: ">=2.18.0 <3.0.0"
 
 dependencies:
-  dart_frog: ^0.1.0
+  dart_frog: ^0.2.0
 
 dev_dependencies:
   mocktail: ^0.3.0