SERVER-134415 addressed OOM issues by reducing the resmoke_jobs_max to 1, but SERVER-132592 inadvertently increased resmoke_jobs_max to 2, which resurfaced the OOM issues.

The first changes set the property to 1 at the variant-level and the second change set it to 2 at the task-level. By the way tasks are generated, the 2 value overrides the 1.

That means that without removing the task-level setting, our variant-level property will never be honored.

With that in mind, my proposal is to increase the instance to rhel8.8-arm64-m8g-8xlarge, which should have enough available memory to run two jobs concurrently.