fix: bump optree from 0.19.0 to 0.19.1

[dependabot]

Bumps optree from 0.19.0 to 0.19.1.

Release notes

Sourced from optree's releases.

optree v0.19.1

Added

• Add attrs integration module optree.integrations.attrs with field, define, frozen, mutable, make_class, register_node, and AttrsEntry by @​XuehaiPan in #273.
• Add optree.dataclasses.register_node to register existing dataclasses as pytree nodes by @​XuehaiPan in #273.
• Extend GetAttrEntry to support dotted attribute paths for traversing nested attributes (e.g., a.b.c) by @​XuehaiPan.
• Add functools.Placeholder support and re-export for optree.functools.partial (Python 3.14+) by @​XuehaiPan in #276.

Fixed

• Fix Windows wheels crashing when another extension preloads an older msvcp140.dll by disabling MSVC's constexpr std::mutex constructor by @​XuehaiPan in #279. Issued by @​jmkolbe in #278.

Full Changelog: metaopt/optree@v0.19.0...v0.19.1

Changelog

Sourced from optree's changelog.

[0.19.1] - 2026-05-05

Added

• Add attrs integration module optree.integrations.attrs with field, define, frozen, mutable, make_class, register_node, and AttrsEntry by @​XuehaiPan in #273.
• Add optree.dataclasses.register_node to register existing dataclasses as pytree nodes by @​XuehaiPan in #273.
• Extend GetAttrEntry to support dotted attribute paths for traversing nested attributes (e.g., a.b.c) by @​XuehaiPan.
• Add functools.Placeholder support and re-export for optree.functools.partial (Python 3.14+) by @​XuehaiPan in #276.

Fixed

• Fix Windows wheels crashing when another extension preloads an older msvcp140.dll by disabling MSVC's constexpr std::mutex constructor by @​XuehaiPan in #279. Issued by @​jmkolbe in #278.

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Commits

• bb82963 ver: bump version to 0.19.1
• 8cf3114 fix(build): work around MSVC std::mutex ABI mismatch on Windows wheels (#279)
• 7d80015 feat(functools): add Placeholder support and tests for functools.partial ...
• bd32248 docs(README): explain why dict keys are sorted during flattening
• 4496033 feat(accessors): support dotted attribute paths in GetAttrEntry
• 33ec43f deps(workflows): bump codecov/codecov-action from 5 to 6 (#275)
• ae80a8c feat(integrations): add attrs integration with PyTree support (#273)
• b4fde61 docs: handle PyTree types inside unions in typehints_formatter
• bbc0097 docs: fix typehints_formatter for Callable and polish docs
• 24bf2d4 docs: polish README.md
• Additional commits viewable in compare view

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