Dig 0ut your party hats. The Grand Gala is returning Dec. 3 with a show headlined by Tony Award-winning “Hamilton” star Renée Elise Goldsberry, with the traditional afterparty at The Grand Opera House. It will feature food, drink and entertainment spread out throughout the 150-year-old building. A major fundraiser for the opera house’s community engagement programs, the 2020 gala was …