use 0.5.0

firebase/firebase-functions-dart#125

Author: jhuleatt

templates/init/functions/dart/pubspec.yaml

@@ -1,13 +1,13 @@
 name: functions_template
 description: An app using Dart with Cloud Functions for Firebase
-version: 1.0.0
+version: 0.0.1
 publish_to: none
 
 environment:
   sdk: ^3.9.0
 
 dependencies:
-  firebase_functions: ^0.1.0
+  firebase_functions: ^0.5.0
 
 dev_dependencies:
   build_runner: ^2.4.0