Hostess Brands Inc., the maker of Twinkies, Ding Dongs and Wonder Bread, is winding down operations and closure will impact Northern Nevada Hostess workers.The bakery firm has struggled to keep up with rising labor costs and ever-changing tastes of Americans, who have grown accustomed to a dizzying array of new snacks flooding supermarket aisles every year.In Carson City, according to sources unwilling to be identified, perhaps 20 workers will lose employment if the company stops operations as expected. “I'm really not allowed to make announcements to the press,” said an employee unwilling to be identified at the Hostess-Wonder Bread outlet …