Johnson’s farewell to the UK marks a “change of era” 6:20 (CNN) — Liz Truss will take over as UK Prime Minister, succeeding Boris Johnson, the ruling Conservative Party announced Monday. Johnson will continue to serve until he submits his resignation to Queen Elizabeth on Tuesday. The process for the new election began after Boris Johnson resigned as leader on July 7, after months of scandals that made his position untenable. News in development…