Update net-istio nightly (#12336)
Update net-istio nightly (#12336)

bumping knative.dev/net-istio 572f531...4352c6f:
  > 4352c6f upgrade to latest dependencies (# 813)

Signed-off-by: Knative Automation <f415700d4d0ce1c81810fe7553e3eea2bed16231@knative.team>
knative/serving,knative/serving