upgrade package info plus to fix windows issues

Author: lohanidamodar

templates/flutter/pubspec.yaml.twig

@@ -15,7 +15,7 @@ dependencies:
   dio: ^4.0.0
   dio_cookie_manager: ^2.0.0
   flutter_web_auth: ^0.3.0
-  package_info_plus: ^1.0.1
+  package_info_plus: ^1.0.3
   path_provider: ^2.0.2
   shared_preferences: ^2.0.6
   universal_html: ^2.0.8