Mark Ruffalo's son, Keen, has joined the long line of nepo babies taking over Hollywood. The bushy-haired newcomer, 25, has nabbed the role of Connor Jacobson in Amazon Prime's new teen drama Sterling Point, which started streaming all eight episodes on Wednesday. As Keen revealed on Friday's segment of the Today show, his decision to give acting a try came amid the 'Covid depression.' The youngster previously pursued a fashion design degree before dropping out college. 'It was around Covid and it got to that point where everyone was really burning out being inside,' Keen explained to co-hosts Al Roker, Dylan Dreyer and Craig Melvin. 'I…