Send alerts for suspect comments

### Problem Statement

The Suspect Commits feature is great in determining the cause of new issues, but the GitHub pull request comments aren't the best way to get notified since many developers don't check GitHub comments.

Code in our org is owned by teams, so it'd be better to notify a specific team about the issue.

It would be great if there was a way to send alerts to a Slack channel.

related: https://github.com/getsentry/sentry/issues/71127

### Solution Brainstorm

_No response_

### Product Area

Alerts