gh-111506: Add _Py_OPAQUE_PYOBJECT to hide PyObject layout & related API · python/cpython@08d963d

HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK is set: not checking for outdated dependents or dependents with broken linkage!

xz 5.8.1 is already installed and up-to-date. To reinstall 5.8.1, run: brew reinstall xz

pkgconf 2.4.3 is already installed and up-to-date. To reinstall 2.4.3, run: brew reinstall pkgconf