chore(deps): update dependency black to v26.5.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
black (changelog)	==26.3.1 → ==26.5.1

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Release Notes

psf/black (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)

v26.5.0

Compare Source

Highlights

• Add support for unpacking in comprehensions (PEP 798) and for lazy imports (PEP 810),
  both new syntactic features in Python 3.15 (#​5048)
• Python 3.15 is now supported. Compiled wheels are not yet provided for Python 3.15, so
  performance may be slower than on existing Python versions. Wheels will be provided
  once Python 3.15 is later in its release cycle. (#​5127)

Stable style

• Fix # fmt: skip being ignored in nested if expressions with parenthesized in
  clauses (#​4903)
• Add syntactic support for Python 3.15 (#​5048)
• Fix crash when an f-string follows a # fmt: off comment inside brackets (#​5097)
• Preserve multiline compound statement headers when # fmt: skip is placed on the
  colon line (#​5117)

Preview style

• Improve heuristics around whether blank lines should appear before, within and after
  groups of same-name decorated functions (such as @overload groups) in .pyi stub
  files (#​5021)
• Fix blank lines being removed between a function and a decorated class in .pyi stub
  files (#​5092)
• Prevent string merger from creating unsplittable long lines when a pragma comment
  (e.g. # type: ignore) follows the closing bracket (#​5096)

Packaging

• Run CI on 3.15 (#​5127)

Output

• Improve parse error readability by showing multi-line output with an error pointer.
  (#​5068)
• Add SourceASTParseError to distinguish source parse failures from internal safety
  errors, improving error reporting when Black's lenient parser accepts input that
  ast.parse() rejects (#​5080)

Blackd

• Return HTTP 400 (Bad Request) for source parse failures instead of HTTP 500, keeping
  HTTP 500 only for genuine internal safety errors (#​5080)

Integrations

• Added documentation for doctest formatting tools and updated the integrations index to
  match (#​4916)

Documentation

• Use "Version X.Y.Z" headings in changelog for stable permalink anchors on ReadTheDocs
  (#​5063)
• Note in the editor integrations that the SublimeText sublack plugin is archived and
  unmaintained (#​5082)

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