Yied Pozi

Results 2 issues of Yied Pozi

### Changes proposed in this Pull Request: This PR fixes errors encountered when running `artisan migrate:refresh` due to tables not being dropped. - Drop database tables upon migration rollback.

### Changes proposed in this Pull Request: This PR adds support for Laravel 11. - Update composer.json to support Laravel 11. - Update TelegramFetchCommand::handleSignal() for SignalableCommandInterface compatibility.