chore: new black changes

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Update black and apply changes to affected files. I separated this PR so we can have a look at the changes and decide whether we want to:

1. Go forward with the new formatting
2. Change the black config to make the old formatting valid
3. Get rid of black entirely and just use ruff
4. Do something I haven't thought of

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I added a skip here, as the new black formatting conflicts with flake8 E701/E704 (see e.g. here). Resolving this doesn't seem as simple as ignoring these codes in flake8; my quick attempt at that caused several other flake8 errors to surface. I decided the easiest way forward would be to have black ignore affected lines.