build(deps): bump black from 25.11.0 to 25.12.0 in /requirements

[dependabot]

Bumps black from 25.11.0 to 25.12.0.

Release notes

Sourced from black's releases.

25.12.0

Please test out the draft 2026 style in version 26.1a1! This style will be finalized in the January release (26.1.0). Most of the changes in --preview will be in the 2026 stable style, but not all. Please share your feedback!

This release (25.12.0) will still produce the 2025 style.

Highlights

• Black no longer supports running with Python 3.9 (#4842)

Stable style

• Fix bug where comments preceding # fmt: off/# fmt: on blocks were incorrectly removed, particularly affecting Jupytext's # %% [markdown] comments (#4845)
• Fix crash when multiple # fmt: skip comments are used in a multi-part if-clause, on string literals, or on dictionary entries with long lines (#4872)
• Fix possible crash when fmt: directives aren't on the top level (#4856)

Preview style

• Fix fmt: skip skipping the line after instead of the line it's on (#4855)
• Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting (#4865)
• Fix fix_fmt_skip_in_one_liners crashing on with statements (#4853)
• Fix fix_fmt_skip_in_one_liners crashing on annotated parameters (#4854)
• Fix new lines being added after imports with # fmt: skip on them (#4894)

Packaging

• Releases now include arm64 Windows binaries and wheels (#4814)

Integrations

• Add output-file input to GitHub Action psf/black to write formatter output to a file for artifact capture and log cleanliness (#4824)

Changelog

Sourced from black's changelog.

25.12.0

Highlights

• Black no longer supports running with Python 3.9 (#4842)

Stable style

• Fix bug where comments preceding # fmt: off/# fmt: on blocks were incorrectly removed, particularly affecting Jupytext's # %% [markdown] comments (#4845)
• Fix crash when multiple # fmt: skip comments are used in a multi-part if-clause, on string literals, or on dictionary entries with long lines (#4872)
• Fix possible crash when fmt: directives aren't on the top level (#4856)

Preview style

• Fix fmt: skip skipping the line after instead of the line it's on (#4855)
• Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting (#4865)
• Fix fix_fmt_skip_in_one_liners crashing on with statements (#4853)
• Fix fix_fmt_skip_in_one_liners crashing on annotated parameters (#4854)
• Fix new lines being added after imports with # fmt: skip on them (#4894)

Packaging

• Releases now include arm64 Windows binaries and wheels (#4814)

Integrations

• Add output-file input to GitHub Action psf/black to write formatter output to a file for artifact capture and log cleanliness (#4824)

Commits

• 782e560 Pin actions/[email protected] (#4895)
• f0f4094 Fix new lines being added after imports with # fmt: skip on them (#4894)
• 70fc194 Revert "Fix # fmt: skip ignored in deeply nested expressions" (#4893)
• 7044b14 Prepare 25.12.0 release (#4891)
• 5b470f0 Fix # fmt: skip ignored in deeply nested expressions (#4883)
• 1b342ef Fix crash when multiple # fmt: skip comments are used in multi-part if-clau...
• 7b265f1 Pin Hatch to hopefully fix Docker builds (#4878)
• c9523f4 Attempt to fix Docker build failures (#4876)
• 0f376e0 Fix crashes when fmt directives are indented (#4856)
• a8bfcc1 Fix fmt: skip skipping the line after instead of the line it's on (#4855)
• Additional commits viewable in compare view

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.43%. Comparing base (21b3d93) to head (db4ae9f).
⚠️ Report is 6 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2815      +/-   ##
==========================================
- Coverage   84.52%   84.43%   -0.09%     
==========================================
  Files          92       92              
  Lines       10964    10964              
==========================================
- Hits         9267     9258       -9     
- Misses       1697     1706       +9