bump `black` in precommit and run on the lib

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (c25a1c8) 100.00% compared to head (b433fb9) 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #647 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 9 9 Lines 2872 2872 ========================================= Hits 2872 2872 ``` | [Impacted Files](https://app.codecov.io/gh/getsentry/responses/pull/647?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=getsentry) | Coverage Δ | | |---|---|---| | [responses/\_\_init\_\_.py](https://app.codecov.io/gh/getsentry/responses/pull/647?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=getsentry#diff-cmVzcG9uc2VzL19faW5pdF9fLnB5) | `100.00% <ø> (ø)` | | | [responses/tests/test\_recorder.py](https://app.codecov.io/gh/getsentry/responses/pull/647?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=getsentry#diff-cmVzcG9uc2VzL3Rlc3RzL3Rlc3RfcmVjb3JkZXIucHk=) | `100.00% <ø> (ø)` | |

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