[FEATURE REQ] Upgrade Netty dependencies in Cosmos SDK

[marcellustavares]

Is your feature request related to a problem? Please describe.

In direct mode, the current Netty version adopted by Cosmos SDK uses an Netty version does not verify endpoint. Not doing hostname verification is obsolete and insecure practice.

Current Cosmos SDK API version does not offer ways to configure/validate the endpoint.

Describe the solution you'd like

I would vote that Cosmos SDK adopts a more recent and less vulnerable Netty version. Ideally the latest 4.2.x

Describe alternatives you've considered

I considered upgrading the Netty dependencies myself but current Cosmos SDK code will not work without a patch.

Thanks!

[github-actions]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @kushagraThapar @pjohari-ms @TheovanKraay.