Revert "Update Envoy SHA for WebSocket fix (#1859)" (#1860)
Revert "Update Envoy SHA for WebSocket fix (#1859)" (#1860)

This reverts commit f47be07ab8b72316c9986d59c637d03122418617.
istio/proxy,lizan/proxy,lizan/proxy,istio/proxy,istio/proxy,lizan/proxy,lizan/proxy,istio/proxy