By Valerie Volcovici, Gloria Dickie and David Stanway DUBAI (Reuters) -COP28 President Sultan al-Jaber urged countries on Friday to get out of their comfort zones and work together to reach agreement on a new global deal to fight climate change before the two-week summit ends. “Let’s please get this job done,” he said, opening a plenary session as the summit entered its toughest phase of negotiations. With five days left before the conference’s scheduled end on Dec. 12, country ministers were joining the discussions. “I need you to step up, and I need you to come out of your comfort zones,” Ja…