Is there any way to increase the macos VMs for open source project?

[littleGnAl]

I try running ios in macOS VMs but I got Scheduling was delayed due to a concurrency limit on community tasks all the time,
as the FAQ said: 12.0 CPUs macOS VM (1 VM), if there's only 1VM available, it seems the task will always be queued.

For my tasks https://cirrus-ci.com/build/4660136757690368, it wait almost half an hour, is there any way to increase the macOS VMs for open source projects?