build(deps): bump github.com/envoyproxy/envoy from 1.31.1-0.20240821014141-c8f58b61c36d to 1.31.1 in /golang-http/simple in the examples-golang-http group

build(deps): bump github.com/envoyproxy/envoy from 1.31.1-0.20240821014141-c8f58b61c36d to 1.31.1 in /golang-http/simple in the examples-golang-http group #280