Amazon parcels are prepared for delivery at Amazon's Robotic Fulfillment Centre.Nathan Stirk | Getty ImagesAmazon is requiring that third-party sellers label any product images or videos that contain "AI-generated people" after New York recently passed a law mandating greater transparency around "synthetic performers" in ads. The company informed sellers Wednesday of the policy change, according to a copy of the announcement viewed by CNBC. The policy directs sellers to tag images and any "A+ c...