How do I set the runtime class for the pods an AutoscalingRunnerSet spins up?

[found-it]

Hello! I'm trying to set the runtime class for the pods that are spun up with the Actions Runner Controller and I'm failing to see where I need to set it. I followed the quickstart and have the controller working with a personal repo. However I'm failing to see how I inject a runtime class for the runner pods to spin up with?

Any pointers would be appreciated. Thank you!