Use a different library for websockets connections

[ghjm]

The aiohttp library does not support https proxy servers, which is something we would like to have. A new library, python-httpx (https://www.python-httpx.org/), appears to support websockets over https proxies. We should investigate whether it is feasible to switch to this library and, if so, whether its ws/wss-over-https implementation will work for us.

[chrismeyersfsu]

We chose aiohttp for AWX because runner uses aiohttp :(

[ghjm]

Who's the more foolish, the fool or the fool who follows him?