The gringos want to know: Who was that dreamboat breathily crooning in Spanish at this year’s Oscars? Born in Medellín, Colombia, and raised in Miami, the 27-year-old made his Academy Awards debut on Sunday night with a heartrending performance of “Dos Oruguitas,” or “Two Caterpillars,” the Oscar-nominated original song from the 2021 Disney animated film “Encanto.” Accompanied by a duo …