Sean “Diddy” Combs, left, and Jay-Z, pictured at a 2020 Grammys event in Beverly Hills, are named in a lawsuit amended Sunday. Hip-hop megastar Jay-Z has emphatically denied accusations in a lawsuit that he and fellow entertainer Sean “Diddy” Combs raped a 13-year-old girl more than two decades ago. “Whomever would commit such a crime against a minor should be …