Gary Oldman claims the next James Bond has been decided, as he backed his “Slow Horses” co-star, Jack Lowden, to step into the iconic role. “It’s been rumored that he’s on the shortlist,” Oldman, 68, said during a new interview with Canada’s “The Morning Show.” “We’re going to find out pretty soon, aren’t we? Because they have picked him,” the Oscar winner alleged. “They have made their choice, but they have not announced it yet.” Oldman said that his “fingers are crossed” for Lowden, 36, to take on the role. Page Six has reached out to Amazon MGM Studios, who owns the Bond franchise, and Lowden’s rep for comment. Lowden hasn’t responded…