envoy@1.18: removes go dependency

[codefromthecrypt]

According to @lizan #83413 (comment)

Envoy build process pulls Go 1.15.5 by Bazel (https://github.com/envoyproxy/envoy/blob/main/bazel/dependency_imports.bzl#L14), so it isn't relevant to system Go. M1 support should be ignored until Envoy supports that.

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