incident doesn't update with update status (#219)

[icecoldPHP]

When you add an update to an incident it doesn't update the incident's status. This fixes that #219

[steffjenl]

It might be cleaner to use an Event and Listener to handle updates to the parent Incident status. You can also added support for triggering a webhook whenever the incident status changes.

You can check out my example here: https://github.com/cachethq/core/compare/main...steffjenl:core:feature/issue-219?expand=1

@jbrooksuk I'd love to hear your thoughts on this approach?