Stephen Colbert is bidding farewell to late-night as The Late Show ends its run on CBS on Thursday, May 21. Ahead of its final week on air, the late-night talk show has announced its guest stars, including Jon Stewart, Steven Spielberg, and Bruce Springsteen. On Monday, May 18, Colbert will stroll down memory lane to remember the “Worst” of the Late Show and make it clear it’s “not a clip show!” A new episode on Tuesday, May 19, will have The Daily Show host Jon Stewart visit Colbert. Filmmaker Steven Spielberg will also make an appearance, and a special performance by David Byrne alongside Colbert will cap the night off. Wednesday, May 20, will have Colbert take “The Colbert Questionert,” which will feature special guests throughout the night. Bruce Springsteen is set to perform. Watch on Deadline The series finale of The Late Show with Stephen Colbert is set for Thursday, May 21.…