Starts the schedule now, like Run now in the app. The response is 204 No Content and does not include the new test run's ID.

To follow the run you start, for example in a CI pipeline, use POST /v2/schedules/test-runs/{id}/run or POST /v2/schedules/test-runs instead:
both return the new run. The newest run in the list is not always yours,
because other runs can start at the same time.

Requires the TestRun:Create permission.