Bump black from 22.6.0 to 22.8.0

Bumps [black](https://github.com/psf/black) from 22.6.0 to 22.8.0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@22.6.0...22.8.0)

---
updated-dependencies:
- dependency-name: black
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -28,7 +28,7 @@ pytest-cov = "^3.0.0"
 pytest-timeout = "^2.0.1"
 flake8 = "^5.0.4"
 tkinter-stubs = { url = "https://github.com/insolor/tkinter-stubs/releases/download/0.1.0/tkinter_stubs-0.1.0-py3-none-any.whl" }
-black = "^22.6.0"
+black = "^22.8.0"
 
 [tool.poetry.extras]
 examples = ["httpx", "Pillow"]