Changes to Find alerts

added the optional property content/items/custom_fields to the response with the 200 status

added the new filter:guardrail_type enum value to the content/items/triggers/items/trigger_configs/items/type response property for the response status 200

added the optional property content/items/triggers/items/trigger_configs/items/group_index to the response with the 200 status

removed the optional property content/items/triggers/items/trigger_configs/items/group_index from the response with the 200 status