Fix installing with MySQL 8.0.4+

Signed-off-by: Joas Schilling <coding@schilljs.com>

lib/private/Setup/MySQL.php

@@ -100,9 +100,9 @@ class MySQL extends AbstractDatabase {
 			$password = $this->dbPassword;
 			// we need to create 2 accounts, one for global use and one for local user. if we don't specify the local one,
 			// the anonymous user would take precedence when there is one.
-			$query = "CREATE USER '$name'@'localhost' IDENTIFIED BY '$password'";
+			$query = "CREATE USER '$name'@'localhost' IDENTIFIED WITH mysql_native_password BY '$password'";
 			$connection->executeUpdate($query);
-			$query = "CREATE USER '$name'@'%' IDENTIFIED BY '$password'";
+			$query = "CREATE USER '$name'@'%' IDENTIFIED WITH mysql_native_password BY '$password'";
 			$connection->executeUpdate($query);
 		}
 		catch (\Exception $ex){