We'll need to upgrade the HPA from v2beta2 to v2 before we get to a min k8s version of 1.26. Probably makes sense to do the migration once our min version is v1.23, which would be around the time we release Knative v1.7 (August 2022)

K8s warning: "API Warning: autoscaling/v2beta2 HorizontalPodAutoscaler is deprecated in v1.23+, unavailable in v1.26+; use autoscaling/v2 HorizontalPodAutoscaler"

/area autoscale
/assign