add constraint for websockets

[vcidst]

Proposed changes:

• Addresses ImportError: cannot import name 'CLOSED' from 'websockets.connection' sanic-org/sanic#2733

Status (please check what you already did):

• added some tests for the functionality
• updated the documentation
• updated the changelog (please check changelog for instructions)
• reformat files using black (please check Readme for instructions)

[ancalita]

@vcidst Could you please add a changelog of type misc so that both us and CSE track this change?

[vcidst]

@ancalita done, does that mean the CI will run again? 😞😨

[ancalita]

@ancalita done, does that mean the CI will run again? 😞😨

Yeah 😬 we should probably open a ticket to include changelog changes in that category of docs changes that only trigger the docs jobs, (rather than all 100+ jobs).

[ancalita]

@vcidst Thinking again of this poetry lock change, I still think we should add websockets with the constraint in pyproject.toml, reason being that if in the near future the lock file gets refreshed because of some other dependency we need to update on 3.5.x, this change will be lost.

[vcidst]

You're right, I can add websockets as a direct dependency with this constraint. This will be temporary though because,

• Sanic will fix this soon for sanic==21.12.0
• And, we'll upgrade to sanic==22.12.0 or sanic==23.3.0

I'll make the changes right away

[github-actions]

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