Federal authorities charged 47 people in Minnesota with conspiracy and other counts in what they said Tuesday was the largest fraud scheme yet to take advantage of the COVID-19 pandemic by stealing $250 million from a federal program that provides meals to low-income children.Prosecutors say the defendants created companies that claimed to be offering food to tens of thousands of children across Minnesota, then sought reimbursement for those meals through the U.S. Department of Agriculture’s food nutrition programs …