A data engineer schedules a Lakeflow Job to run every 15 minutes to ingest and process incoming files. Occasionally a run takes longer than 15 minutes to complete, and the engineer notices that when this happens, a new run starts before the previous one finishes, causing duplicate processing and resource contention. The engineer wants to ensure that only one run of this job executes at a time, with any triggered run waiting until the current one completes. Which job configuration change accomplishes this?