build(deps): bump slotscheck from 0.19.1 to 0.20.1 in /.github/workflows/requirements/style

[dependabot]

Bumps slotscheck from 0.19.1 to 0.20.1.

Release notes

Sourced from slotscheck's releases.

v0.20.1

• Removed the click dependency in favor of the standard library argparse. This makes slotscheck dependency-free (aside from tomli for Python <3.11).
• Add a readme note about the differences between slotscheck and static linters like Ruff and Pylint.

0.20.0

• Improve speed and accuracy of detecting of "slotless" classes, even if they are not pure Python (e.g. C extension modules).
• Remove support for alternative Python implementations (e.g. PyPy) since they treat slots differently and running slotscheck wouldn't be useful. It also allows us to use CPython-specific features.
• Improve accuracy of benchmarks on "errors and violations" page.
• Add experimental --detect-unused-slots flag (Python 3.13+ only) to detect slots that are declared but never assigned within the class body. Disabled by default. Use --exclude-slots to suppress false positives.

Changelog

Sourced from slotscheck's changelog.

0.20.1 (2026-07-05)

• Removed the click dependency in favor of the standard library argparse. This makes slotscheck dependency-free (aside from tomli for Python <3.11).
• Add a readme note about the differences between slotscheck and static linters like Ruff and Pylint.

0.20.0 (2026-05-29)

• Improve speed and accuracy of detecting of "slotless" classes, even if they are not pure Python (e.g. C extension modules).
• Remove support for alternative Python implementations (e.g. PyPy) since they treat slots differently and running slotscheck wouldn't be useful. It also allows us to use CPython-specific features.
• Improve accuracy of benchmarks on "errors and violations" page.
• Add experimental --detect-unused-slots flag (Python 3.13+ only) to detect slots that are declared but never assigned within the class body. Disabled by default. Use --exclude-slots to suppress false positives. Abstract classes are automatically excluded from this check.

Commits

• c97c0d2 fix release date in changelog
• 557fba9 fix brittle test
• 734db78 add changelog note
• 7556199 use sphinx argparse to generate CLI docs
• 4dce3cb add ruff/pylint notes
• 1b53f94 make version lazy-computed
• 960f995 remove click dependency in favor of stdlib
• 4fb44c0 Bump typing-extensions from 4.15.0 to 4.16.0
• 2312500 Bump click from 8.4.1 to 8.4.2
• 223dccc Bump ruff from 0.15.18 to 0.15.20
• Additional commits viewable in compare view

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