Bump python/pybind11 from `a406a62` to `8987944`

[dependabot[bot]]

Bumps python/pybind11 from a406a62 to 8987944.

Commits

• 8987944 Add type_caster_std_function_specializations feature. (#4597)
• 20551ab chore(deps): update pre-commit hooks (#5288)
• 8451053 chore(deps): bump the actions group with 2 updates (#5287)
• 916778d fix: typo in documentation (#5284)
• 7233072 feat: remove Python 3.7 support (#5191)
• 2e260b0 clang-tidy upgrade (to version 18) (#5272)
• 8e7307f docs: remove outdated known limitation. (#5263)
• 6d4805c Small cleanup/refactoring in support of PR #5213 (#5251)
• a582ca8 tests: run on pyodide (#4745)
• dbf848a docs: extend PYBIND11_MODULE documentation, mention mod_gil_not_used (#5250)
• Additional commits viewable in compare view

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[dependabot[bot]]

Superseded by #119.