Remove ExtProc warnings about Envoy

[jameshbarton]

Version

1.17.x (latest)

Gateway API

Kubernetes Gateway API

Describe the requested changes

The ExtProc docs contain this warning: "Envoy’s external processing filter is considered a work in progress and has an unknown security posture. Use caution when using this feature in production environments. For more information, see the Envoy documentation."

This warning should be removed. ExtProc is marked as stable as of Envoy 1.29, and is robust against both untrusted upstream and downstream traffic. https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/filters/http/ext_proc/v3/ext_proc.proto

Link to any relevant existing docs

https://docs.solo.io/gateway/latest/traffic-management/extproc/about/

Browser Information

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Additional Context

No response