Update dependency black to v23.9.1 (#331)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [black](https://togithub.com/psf/black)
([changelog](https://togithub.com/psf/black/blob/main/CHANGES.md)) |
`==23.9.0` -> `==23.9.1` |
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|
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|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/black/23.9.0/23.9.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
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|

---

### Release Notes

<details>
<summary>psf/black (black)</summary>

###
[`v23.9.1`](https://togithub.com/psf/black/blob/HEAD/CHANGES.md#2391)

[Compare Source](https://togithub.com/psf/black/compare/23.9.0...23.9.1)

Due to various issues, the previous release (23.9.0) did not include
compiled mypyc
wheels, which make Black significantly faster. These issues have now
been fixed, and
this release should come with compiled wheels once again.

There will be no wheels for Python 3.12 due to a bug in mypyc. We will
provide 3.12
wheels in a future release as soon as the mypyc bug is fixed.

##### Packaging

- Upgrade to mypy 1.5.1
([#&#8203;3864](https://togithub.com/psf/black/issues/3864))

##### Performance

- Store raw tuples instead of NamedTuples in Black's cache, improving
performance and
decreasing the size of the cache
([#&#8203;3877](https://togithub.com/psf/black/issues/3877))

</details>

---

### Configuration

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rebase/retry checkbox.

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---

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---

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requirements.txt

@@ -1,6 +1,6 @@
 -e .
 aiofiles==23.2.1
-black==23.9.0
+black==23.9.1
 coverage==7.3.1
 GitPython==3.1.36
 mypy==1.5.1