use gobwas/ws instead of gorilla/websocket

[Gekko0114]

Related to knative/pkg#2730, knative/serving#13932, knative/serving#13824
This code doesn't depend on knative.dev/pkg/websocket. We can complete this PR without considering knative.dev/pkg

Changes

https://github.com/gorilla/websocket is deprecated and unmaintained.
We should switch to something that is and ensure everything works as expected (ie. draining in queue proxy etc).
replaced gorilla/websocket with gobwas/ws

• 🧹 Update or clean up current behavior

/kind deprecation

Fixes #800

Release Note

/kind deprecation

[knative-prow]

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[knative-prow]

Welcome @Gekko0114! It looks like this is your first PR to knative/networking 🎉

[knative-prow]

Hi @Gekko0114. Thanks for your PR.

I'm waiting for a knative member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[Gekko0114]

Hi @dprotaso,

I've created a WIP in the downstream serving repo to test the changes I've made.
Could you have a look?
Thanks,

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (68725bd) 94.80% compared to head (446232d) 94.80%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #799   +/-   ##
=======================================
  Coverage   94.80%   94.80%           
=======================================
  Files          41       41           
  Lines        1231     1231           
=======================================
  Hits         1167     1167           
  Misses         52       52           
  Partials       12       12           

☔ View full report in Codecov by Sentry.
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[knative-prow-robot]

PR needs rebase.

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[dprotaso]

Closing this for now - seems like RedHat might become owners of gorilla/websocket - so we'll pause this for now

knative/serving#13824 (comment)