pybind/pybind11: Version 3.0.2

New Features: Added helper functions to py::array that return shape and strides as std::span when available. #5974 Bug fixes: Added fallback locking for Python 3.13t where PyCriticalSection_BeginMutex is unavailable. #5981 Fixed race condition in py::make_key_iterator with free-threaded Python. #5971 MSVC 19.16 and earlier were blocked from using std::launder due to internal compiler errors. #5968 Internals destructors were updated to check the owning interpreter before clearing Python objects. #5965 Internals shutdown handling was refined in two iterations before release: an initial finalization-time cleanup was followed by a safety adjustment to avoid late-shutdown py::cast segfaults. #5958 #5972 Fixed ambiguous str(handle) construction for object-derived types like kwargs or dict by templatizing the constructor with SFINAE. #5949 Fixed concurrency consistency for internals_pp_manager under multiple-interpreters. #5947 Fixed MSVC LNK2001 in C++20 builds when /GL (whole program optimization) is enabled. #5939 Added per-interpreter storage for gil_safe_call_once_and_store to make it safe under multi-interpreters. #5933 A workaround for a GCC -Warray-bounds false positive in argument_vector was added. #5908 Corrected a mistake where support for __index__ was added, but the type hints did not reflect acceptance of SupportsIndex objects. Also fixed a long-standing bug: the complex-caster did not accept __index__ in convert mode. #5891 Fixed *args/**kwargs return types. Added type hinting to py::make_tuple. #5881 Fixed compiler error in type_caster_generic when casting a T implicitly convertible from T*. #5873 Updated py::native_enum bindings to unregister enum types on destruction, preventing a use-after-free when returning a destroyed enum instance. #5871 Fixed undefined behavior that occurred when importing pybind11 modules from non-main threads created by C API modules or embedded python interpreters. #5870 Fixed dangling pointer in internals::registered_types_cpp_fast. #5867 Added support for std::shared_ptr<T> when loading module-local or conduit types from other modules. #5862 Fixed thread-safety issues if types were concurrently registered while get_local_type_info() was called in free threaded Python. #5856 Fixed py::float_ casting and py::int_ and py::float_ type hints. #5839 Fixed two smart_holder bugs in shared_ptr and unique_ptr adoption with multiple/virtual inheritance: shared_ptr to-Python caster was updated to register the correct subobject pointer (fixes #5786). unique_ptr adoption was updated to own the proper object start while aliasing subobject pointers for registration, which fixed MSVC crashes during destruction. #5836 Constrained accessor::operator= templates to avoid obscuring special members. #5832 Fixed crash that can occur when finalizers acquire and release the GIL. #5828 Fixed compiler detection in pybind11/detail/pybind11_namespace_macros.h for clang-cl on Windows, to address warning suppression macros. #5816 Fixed compatibility with CMake policy CMP0190 by not always requiring a Python interpreter when cross-compiling. #5829 Added a static assertion to disallow keep_alive and call_guard on properties. #5533 Internal: CMake policy limit was set to 4.1. #5944 Improved performance of function calls between Python and C++ by switching to the "vectorcall" calling protocol. #5948 Many C-style casts were replaced with C++-style casts. #5930 Added cast_sources abstraction to type_caster_generic. #5866 Improved the performance of from-Python conversions of legacy pybind11 enum objects bound by py::enum_. #5860 Reduced size overhead by deduplicating functions' readable signatures and type information. #5857 Used new Python 3.14 C APIs when available. #5854 Improved performance of function dispatch and type casting by porting two-level type info lookup strategy from nanobind. #5842 Updated .gitignore to exclude __pycache__/ directories. #5838 Changed internals to use thread_local instead of thread_specific_storage for increased performance. #5834 Reduced function call overhead by using thread_local for loader_life_support when possible. #5830 Removed heap allocation for the C++ argument array when dispatching functions with 6 or fewer arguments. #5824 Documentation: Fixed docstring for long double complex types to use numpy.clongdouble instead of the deprecated numpy.longcomplex (removed in NumPy 2.0). #5952 The "Supported compilers" and "Supported platforms" sections in the main README.rst were replaced with a new "Supported platforms & compilers" section that points to the CI test matrix as the living source of truth. #5910 Fixed documentation formatting. #5903 Updated upgrade notes for py::native_enum. #5885 Clarified in the docs to what extent bindings are global. #5859 Tests: Fixed deadlock in a free-threading test by releasing the GIL while waiting on synchronization. #5973 Calls to env.deprecated_call() were replaced with direct calls to pytest.deprecated_call(). #5893 Updated pytest configuration to use log_level instead of log_cli_level. #5890 CI: Added CI tests for windows-11-arm with clang/MSVC (currently python 3.13), windows-11-arm with clang/mingw (currently python 3.12). #5932 These clang-tidy rules were added: readability-redundant-casting, readability-redundant-inline-specifier, readability-redundant-member-init #5924 Replaced deprecated macos-13 runners with macos-15-intel in CI. #5916 Restored runs-on: windows-latest in CI. #5835