See https://github.com/python/cpython/issues/109562. `types.CapsuleType` was added in https://github.com/python/cpython/pull/109600 but cannot be used before 3.13.
See python/cpython#109562.
types.CapsuleTypewas added in python/cpython#109600 but cannot be used before 3.13.