VATICAN CITY (AP) — The Vatican is gearing up for the release of Pope Leo XIV’s first encyclical, a document expected to address artificial intelligence and insist on an ethics-based approach to the technology that prioritizes human dignity, social relationships and peace. Vatican officials said Leo signed the document Friday, 135 years to the day after his namesake, Pope Leo XIII, signed his most important encyclical, “Rerum Novarum,” or Of New Things. That document addressed the rights of