By Madison Williams The 40-year-old has won three WNBA titles during her career. Mercury star Diana Taurasi’s future in the WNBA was uncertain as the 40-year-old had yet to announce whether she would return for her 19th season in the league. But Taurasi told Nick King of Arizona’s 3TV CBS5 on Saturday that she plans on returning to the WNBA for the 2023 season. “You know, I started working out, so, the minute I start working out, that means I’m all in,” Taurasi said. “Like anything, when you get to a certain point in your life, in your professional career, you start taking different things int…