deps: update pre-commit hook psf/black to v26.5.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
psf/black	repository	patch	26.5.0 → 26.5.1

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Release Notes

psf/black (psf/black)

v26.5.1

Compare Source

Stable style

• Fix unstable formatting of annotated assignments whose subscript annotation contains
  an inline comment (e.g. x: list[ # pyright: ignore[...]) (#​5130)
• Preserve inline comments (including # type: ignore) immediately before a
  # fmt: skip line, avoiding AST equivalence failures (#​5139)

Packaging

• Correct the version in the published executables (#​5137)

Documentation

• Add Neovim integration guide covering conform.nvim, ALE, and simple command approaches
  (#​5124)

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Configuration

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  • Only on Sunday and Saturday (* * * * 0,6)
• Automerge
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