gh-135532: use `defining_class` for copying BLAKE-2 and SHA-3 objects… · python/cpython@ef4fc86

HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK is set: not checking for outdated dependents or dependents with broken linkage!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