JACKSON, Miss. — An appeals court Wednesday upheld Mississippi’s method of lethal injection, rejecting arguments from death row inmates who opposed the state’s plan to use drugs not specifically approved by state law.The 5th Circuit U.S. Court of Appeals ruled that U.S. District Judge Henry T. Wingate ruled incorrectly in August when he issued a preliminary injunction blocking the state from executing prisoners.It wasn’t immediately clear if Attorney General Jim Hood would seek to set execution dates for prisoners who have …