Increase rate for unlock pipeline worker
Related to #415503 (comment 1591669422)
Here's an attempt to increase the max_running_jobs of the unlock pipeline worker.
As of this writing, we have ci_unlock_pipelines_high
enabled on production, which is at max_running_jobs 20. Before we merge this, make sure to set the rate at the lowest flag first so that we can slowly ramp up again while monitoring performance.
Edited by Erick Bajao