Replace Black with 'ruff format'

[jodal]

• Bump ruff from 0.0.290 to 0.1.4
• Replace Black with 'ruff format'

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (d930c60) 94.16% compared to head (dffea89) 94.16%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #210 +/- ## ======================================= Coverage 94.16% 94.16% ======================================= Files 14 14 Lines 566 566 Branches 83 83 ======================================= Hits 533 533 Misses 28 28 Partials 5 5 ``` | [Files](https://app.codecov.io/gh/jodal/pykka/pull/210?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stein+Magnus+Jodal) | Coverage Δ | | |---|---|---| | [src/pykka/\_actor.py](https://app.codecov.io/gh/jodal/pykka/pull/210?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Stein+Magnus+Jodal#diff-c3JjL3B5a2thL19hY3Rvci5weQ==) | `97.41% <ø> (ø)` | |

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