build(deps): update testfixtures requirement from <=10.0.0,>=8.3.0 to <=12.0.0,>=12.0.0

[dependabot]

Updates the requirements on testfixtures to permit the latest version.

Changelog

Sourced from testfixtures's changelog.

12.0.0 (23 May 2026)

.. warning:: Breaking changes:

• Comparers have moved from :mod:!testfixtures.comparison to :mod:testfixtures.comparers.

• :func:!django_compare has been removed, :func:compare now works with Django models.

• Refactoring of :class:LogCapture to introduce support for :doc:loguru <loguru>, :doc:structlog <structlog> and similar support for :doc:twisted <twisted> by way of the new :class:~testfixtures.logcapture.CaptureSource architecture.

• :func:compare now supports per-type ignore_eq.

• :func:compare now supports both :doc:polars <polars> and :doc:pandas <pandas> dataframes.

• :func:compare now provides better feedback when objects being compared raised exceptipns in their :any:str or :any:repr.

• Added raises parameter to :meth:OutputCapture.compare, :meth:LogCapture.check and :meth:LogCapture.check_present to they can be more easily used in compositions.

11.0.0 (9 Mar 2026)

• Moved to a uv__-based, pyproject.toml-driven project layout, with main replacing master as the default git branch.

  __ https://docs.astral.sh/uv/

• Move from Circle CI to Github Actions for continuous integration and releasing.

• Lots of documentation has been refreshed.

• Python versions between 3.11 and 3.14, inclusive, are now supported.

• Python versions 3.10 and earlier are no longer supported.

• :class:TempDir is now introduced as a :class:~pathlib.Path-based alternative to :class:TempDirectory.

• :class:TempDir and :class:TempDirectory have grown support for dumping and parsing JSON, YAML and TOML natively by way of the :meth:~TempDir.dump and :meth:TempDir.parse methods.

• :class:TempDir and :class:TempDirectory now have :meth:~TempDir.read_text and :meth:TempDir.read_bytes methods that mirror the behaviour of their :class:~pathlib.Path equivalents.

• :class:TempDir and :class:TempDirectory now support :class:~pathlib.Path objects anywhere they previously supported string and sequences of strings.

... (truncated)

Commits

• 987b414 Prepare for 12.0.0 release
• 626c953 Implement testfixtures.structlog
• fa06deb Happier coverage checking
• cd8b47c Remove code duplication and ensure test coverage
• 6731993 Re-instate coverage checking for tests
• 4ea79a4 Cover the new mypy 2.1 error codes so nightly typing CI passes
• 606bafd Bump polars minimum to 1.32 for the assert_frame_equal output format the test...
• 7e37840 Document pandas and polars DataFrame comparers
• bb061bb Assert exact AssertionError messages for the DataFrame comparer tests
• 2b223df Register pandas and polars DataFrame comparers
• Additional commits viewable in compare view

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[github-actions]

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