「ドライラン」という名前のオプションを見つけることができませんでした

flutter pub publish did not work too

solved using
flutter pub pub publish

または：

flutter packages pub publish --dry-run

参考：

1. https://www.reddit.com/r/FlutterDev/comments/bt66o6/flutter_pub_publish_dryrun_command_is_working_or/

2. https://github.com/flutter/flutter/issues/33302