The voice behind Triumph the Insult Comic Dog won’t face charges for trespassing at the Capitol. The group of staffers for “The Late Show with Stephen Colbert” who were arrested last month will not be prosecuted, Capitol Police and the U.S. Attorney’s Office in Washington, D.C., announced Monday. Nine employees were filming a segment at the Longworth House Office Building about the Jan. 6 committee hearings, with agreement from both Democratic and Republican members of Congress, but were detained by police on June 16, their last night of production, Colbert previously confirmed. Police accused…