SALT LAKE CITY—Donovan Mitchell had 34 points and six assists to lead the Utah Jazz over the Boston Celtics 137–130 Friday night. Mike Conley added 29 points and seven assists for the Jazz. Rudy Gobert tallied 18 points and 12 rebounds. Utah made a season-high 27 3-pointers and shot 53 percent from long distance. It helped the Jazz survive a 52 percent shooting performance by the Celtics. “It feels good to get that win,” Gobert said. “We could have broke down and stopped playing the right way mentally. But we kept moving the ball, we kept attacking, we kept trusting one another. It’s a huge win for us.” Jayson Tatum scored 37 points to lead Boston. Dennis Schroder added 26 points while Al Horford chipped in 21 points and nine assists. It wasn’t enough to overcome Utah’s sizzling shooting. The Jazz are the first team to hit 20 or more …