SZA. (Photo by Astrida Valigorsky/WireImage via Getty Images) SZA gave North West a Summerfest shout-out. During her set at Summerfest on Saturday, June 22, in Milwaukee, Wisconsin, at the American Family Insurance Amphitheater, SZA took a moment from singing to say, “Hi Northie!” which was captured on video by mom Kim Kardashian and shared via…