Following is a summary of current entertainment news briefs. Adele to return to live shows in Las Vegas next year Adele on Tuesday announced a series of concerts in Las Vegas starting in January in what will be her first live performances since 2017. The British singer will perform two shows each weekend from Jan. 21 to April 16 at Caesars Palace Hotel in the desert city. Celebrity surgeon Dr. Oz jumps into Pennsylvania U.S. Senate contest Celebrity heart surgeon Dr. Mehmet Oz on Tuesday said he would mount a Republican bid for a U.S. Senate seat for Pennsylvania, shaking up what could be one…