Media personalities, celebrities, political bigwigs and other revelers spent Friday evening at La Grande Boucherie in Washington, D.C., feting White House Correspondents Association dinner headliner Colin Jost. Jost, a co-anchor on Saturday Night Live’s (SNL) “Weekend Update,” attended the party with his wife, actress Scarlett Johansson. Attendees munched on mini burgers, tuna and cucumber bites…