Bump aiohttp to 3.9.4

[bdraco]

Proposed change

https://github.com/aio-libs/aiohttp/releases/tag/v3.9.4

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• Dependency upgrade
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• This PR fixes or closes issue: fixes #
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[bdraco]

The websocket test failures are fine, they need to change the code.

The file upload ones need to be investigated

[bdraco]

I did manually verify file upload works so it might be that file uploading now writes in the executor instead of doing blocking I/O in the event loop that cause the test to fail 🤞

[bdraco]

reran because of flakey influxdb test. I've attempted to fix it in #115442

[bdraco]

Thanks