laravel/slack-notification-channel compatibilty with Slack Bot User

[slakbal]

As avid users of Slack notifications, especially making use of 1 webhook but redirecting messages to specific channels, are there any plans to update the laravel/slack-notification-channel driver to be compatible with Slack's 'newer' way of sending notifications? Slack is also hinting that the legacy webhook might be dropped in the future.

When setting up a Slack Bot user and using the driver with it's incomming webhook it is not able to override the channel on which the message should be posted.

However using the chat.postMessage together with the correct scopes it is possible.

curl -X POST \ 
  -H 'Authorization: Bearer ###-###-***' \
  -H 'Content-type: application/json' \
  --data '{"channel": "#custom-channel-name","text":"Hello, World!"}' \
  https://slack.com/api/chat.postMessage

https://api.slack.com/legacy/custom-integrations/messaging/webhooks

Would love to hear some feedback.

thanks!