By Matt Audilet New York Yankees superstar Giancarlo Stanton is rumored to be dating 29-year-old actress Priscilla Quintana. The two were spotted together at a Los Angeles club following the 2022 MLB All-Star Game earlier this week, per SideAction.com. The 32-year-old slugger was seen smiling alongside his new girlfriend in photos obtained by the site. After Stanton was named as MVP of the All-Star Game, Quintana took to Instagram to acknowledge the accomplishment — tagging him in the post with a heart emoji. The two follow each other in Instagram. One of Quintana’s Instagram posts from June 2…