Support for Python 3.11rc4

[wjcunningham7]

What should we add?

The final release candidate for Python 3.11 was released in July. Time to start testing!

I am testing this using a modification of the Python Docker image defined here.

Known issues:

• aiohttp must be installed using
  AIOHTTP_NO_EXTENSIONS=1 python -m pip install aiohttp --no-binary aiohttp
  Further discussion about this issue here.
• uvloop must be installed using
  pip install -e git+https://github.com/MagicStack/uvloop.git@master#egg=uvloop
  Further discussion about this issue here.
• The following must be removed from tests/requirements.txt
  • locust
  • nbconvert
  • pennylane
• Several other packages required by Covalent will need updating

Covalent will be marked semi-stable with Ubuntu 20.04 / Python 3.11rc2 when the full suite of unit and functional tests pass.

[wjcunningham7]

related to #1742

[Andrew-S-Rosen]

Beautiful! Would love to see this.

Edit: Just realized this was old. 😅 But this is useful for identifying known issues! I probably won't be able to get my PR merge-able anytime soon...