Update `python-sc2`

[raspersc2]

Currently not running on ladder due to relying on old package.
python-sc2 should be updated with syntax updated as necessary

Traceback (most recent call last):
  File "/bots/sludge-revived/run.py", line 7, in <module>
    import sc2, sys
  File "/bots/sludge-revived/sc2/__init__.py", line 20, in <module>
    from .main import run_game
  File "/bots/sludge-revived/sc2/main.py", line 5, in <module>
    import async_timeout
ModuleNotFoundError: No module named 'async_timeout'