Update net-istio nightly (#11247)
Update net-istio nightly (#11247)

bumping knative.dev/net-istio 4dc817a...94c1716:
  > 94c1716 upgrade to latest dependencies (# 606)
  > b896972 upgrade to latest dependencies (# 605)

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