ATHENS—Greece banned music in restaurants and bars and restricted movement on its popular holiday island of Mykonos on Saturday after a rise in new coronavirus infections there. Known as the party island of the super-rich, Mykonos is one of Greece’s most popular destinations, attracting more than a million visitors each summer, among them Hollywood stars, models, and world-famous athletes. Following a “worrying” local outbreak, the Civil Protection Ministry said it was banning music on the island around the clock and would only allow movement between 1 a.m to 6 a.m to those going to and from work, or for health reasons. The restrictions will be in place until July 26, it said. Greece depends on tourism for a fifth of its economy and desperately needs a strong season this year following a disastrous 2020 when visitor numbers and revenues collapsed. The number of infections has been rising in Greece in …