Set "failurePolicy" for ValidatingWebhookConfiguration

[rhizoet]

Ask your question here:

Is there a way to set the failurePolicy for https://github.com/knative/serving/blob/main/config/core/webhooks/configmap-validation.yaml when rolling out knative-serving?

We have problems with Fail under Gardener and would like to set this to Ignore. Unfortunately this keeps resetting itself. How can this be solved? It would be practical if you could set this in the spec of knative-serving.