[TRIGGER] Cliniko - New Appointment updated Webhook

[cammoore54]

--- Context ---
It would be great to have a webhook for when an appointment is updated in Cliniko, i.e if time changed or appointment type changed

https://docs.api.cliniko.com/developer-portal/

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To Component Dev, I don't think Cliniko offer webhook capability, there's a list Appointment API here: https://docs.api.cliniko.com/openapi/reference/tag/Individual-Appointment/#tag/Individual-Appointment/operation/ListIndividualAppointments-Get