Changes to List webhooks

added the new activity-attribute.created enum value to the data/items/subscriptions/items/event_type response property for the response status 200

added the new activity-attribute.updated enum value to the data/items/subscriptions/items/event_type response property for the response status 200

added the new activity-record.created enum value to the data/items/subscriptions/items/event_type response property for the response status 200

added the new activity-record.deleted enum value to the data/items/subscriptions/items/event_type response property for the response status 200

added the new activity.created enum value to the data/items/subscriptions/items/event_type response property for the response status 200

added the new activity.deleted enum value to the data/items/subscriptions/items/event_type response property for the response status 200

added the new activity.updated enum value to the data/items/subscriptions/items/event_type response property for the response status 200

added the new call-recording.created enum value to the data/items/subscriptions/items/event_type response property for the response status 200