Veteran Paul McCartney, rapper Kendrick Lamar and US chart-topper Olivia Rodrigo will perform at Glastonbury in June, organisers said on Friday, after the music festival returns following a three-year absence due to the COVID pandemic. McCartney and Lamar complete the list of headliners for the main Pyramid Stage at the June 22-26 festival after Billie Eilish and Diana Ross were previously announced as part of the line-up. McCartney, who last performed at the major greenfield music event in 2004, had been due to take part in the 2020 edition of the festival before it was cancelled. “For us, ha…