Apple and five leading U.S. book publishers have been hit with a class-action lawsuit over eBook pricing. According to a statement on the website of Hagens Berman, the firm that filed the suit, Apple, HarperCollins, Hachette, Macmillan, Penguin, and Simon & Schuster are accused of colluding to increase the prices on popular eBook titles in order to boost profits and force Amazon to abandon its “pro-consumer discount pricing.” The suit…