Update dependency style/flake8 to v7 (#23)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [style/flake8](https://togithub.com/pycqa/flake8)
([changelog](https://flake8.pycqa.org/en/latest/release-notes/index.html))
| `==6.1.0` -> `==7.0.0` |
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---

### Release Notes

<details>
<summary>pycqa/flake8 (style/flake8)</summary>

### [`v7.0.0`](https://togithub.com/pycqa/flake8/compare/6.1.0...7.0.0)

[Compare
Source](https://togithub.com/pycqa/flake8/compare/6.1.0...7.0.0)

</details>

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Diff for: pyproject.toml

@@ -22,7 +22,7 @@ dist = [
 style = [
   "autoflake==2.2.1",
   "black==23.12.1",
-  "flake8==6.1.0",
+  "flake8==7.0.0",
   "flake8-isort==6.1.1",
   "flake8-print==5.0.0",
   "flake8-pyproject==1.2.3",