RUF006 now triggers on assignments to globals

[hauntsaninja]

Since #9060, ruff now complains about:

import asyncio

consumer_task: asyncio.Task

class Something:
    @classmethod
    async def start_async(cls, something):
        global consumer_task
        consumer_task = asyncio.create_task(something.consume_messages())
        return something

Similar issue applies to assignments to nonlocal

Filing as per #9060 (comment)

[charliermarsh]

Thanks! Will fix.