Current limit of 3 is too low, as the updates are happening faster than
they are processed via our review process.
As this limit applies to the total number of outstanding PRs, any PR
that requires additional investigation is further reducing the update
speed.
Bumping 2x to see if this would get us back on track to catching up with
the current state of the world.
if the Docker dependencies were very outdated, you might want to start with a daily schedule until the dependencies are up-to-date, and then drop back to a weekly schedule