Laravel forge supports Slack notifications but currently lacks the ability to send notifications to Telegram. So until Taylor (Creator for Laravel Forge) & team adds official implementation, please feel free to use TeleNoty for your team.
TeleNoty is an open source app & source is available to browse on GitHub. If you find any bugs, please report them by opening an issue on GitHub or feel free to submit pull request.
Hope you will find it useful. Happy coding :)