The line-up of artists who will perform at this year’s iHeartRadio’s Z100 Jingle Ball will be announced Friday during a live event at American Dream. The holiday concert, presented by Capital One, will be held at Madison Square Garden on Friday, Dec. 9. It’s part of an annual national event hosted by local iHeartRadio stations in Dallas/Ft. Worth, Los Angeles, Detroit, Philadelphia, New York, Boston, Washington, D.C., Chicago, Atlanta, Tampa and Miami/Ft. Lauderdale. Last year’s lineup included Ed Sheeran, Dua Lipa, Jonas Brothers, Doja Cat, Lil Nas X, Saweetie, AJR and Kane Brown. The officia…