deps(deps-dev): update black requirement (#7)

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@24.10.0...26.1.0)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 26.1.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -50,7 +50,7 @@ dev = [
     "pytest-xdist~=3.0",
     "hypothesis~=6.0",
     "coverage[toml]~=7.0",
-    "black>=24.10,<26.0",
+    "black>=24.10,<27.0",
     "isort>=5.13,<8.0",
     "ruff>=0.6.9,<1.0",
     "mypy~=1.11",