Dockerfile: Use Envoy image that always resumes NPDS
Dockerfile: Use Envoy image that always resumes NPDS

Use an updated Envoy image that always resumes gRPC for NPDS after
having paused it for the duration of worker threads completing their
policy updates. This restores the earlier behavior of sending an ACK
for the NPDS also when the last listener is removed from Envoy.

Signed-off-by: Jarno Rajahalme <0f1ab0ac7dffd9db21aa539af2fd4bb04abc3ad4@covalent.io>
tgraf/cilium,cilium-team/cilium,tklauser/cilium,tgraf/cilium,cilium/cilium,tgraf/cilium,cilium/cilium,tgraf/cilium,tgraf/cilium,tklauser/cilium,michi-covalent/cilium,tklauser/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium,michi-covalent/cilium,tklauser/cilium,cilium/cilium,michi-covalent/cilium,tgraf/cilium,cilium-team/cilium,tklauser/cilium