Update black requirement from >=21.4,<23.0 to >=21.4,<24.0 (#6)

Updates the requirements on [black](https://github.com/psf/black) to permit the latest version.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@21.5b0...23.1.0)

---
updated-dependencies:
- dependency-name: black
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pyproject.toml

@@ -9,13 +9,13 @@ repository = "https://github.com/kpj/jupyfmt"
 
 [tool.poetry.dependencies]
 python = "^3.8.0"
-black = ">=21.4,<23.0"
+black = ">=21.4,<24.0"
 nbformat = "^5.1.2"
 click = ">=7.1.2,<9.0.0"
 
 [tool.poetry.dev-dependencies]
 bump2version = "^1.0.1"
-black = ">=21.4,<23.0"
+black = ">=21.4,<24.0"
 pytest = "^7.0.0"
 
 [tool.poetry.scripts]