helm3 upgrade error unknown field "metrics" in io.k8s.api.autoscaling.v1.HorizontalPodAutoscalerSpec

Summary

Testing a helm3 v3.4.2 upgrade gitlab-com/gl-infra/delivery#1399 (closed) for the GitLab Chart we are running into the following error:

  Error: unable to build kubernetes objects from release manifest: error validating "": error validating data: ValidationError(HorizontalPodAutoscaler.spec): unknown field "metrics" in io.k8s.api.autoscaling.v1.HorizontalPodAutoscalerSpec

I assume the error is coming from https://gitlab.com/gitlab-org/charts/gitlab/-/blob/efc0b6bf4fb30e744e255a9a98e1c64b3f08704f/charts/nginx/templates/controller-hpa.yaml#L4 where we use apiVersion: autoscaling/v1. Though it's not clear to me why it's only happening to us.

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