Update net-istio nightly (#12418)
Update net-istio nightly (#12418)

bumping knative.dev/net-istio c24c937...9194b76:
  > 9194b76 upgrade to latest dependencies (# 832)
  > fc67352 Drop explicit indirect dependencies (# 831)

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