John Reynolds is many things. He’s an actor, a comedian, a writer, a producer, and a SAG Award winner (for his work on “Stranger Things”). Most importantly, though, he is a Midwesterner, something that shines through as I chat with him about his upcoming film “Never Change!” The comedy, which follows a group of millennials who must return to high school for two weeks due to a legal loophole, is Reynolds’ first feature film as a writer and produc…