sout -> logger

Author: Haarolean

src/test/java/com/cronutils/Issue480Test.java

@@ -78,7 +78,7 @@ private static ZonedDateTime nextRun(Cron cron, ZonedDateTime when) {
         if (!next.isPresent()) {
             fail();
         }
-        System.out.println("Calculated next run at " + next.get());
+        LOGGER.info("Calculated next run at {}", next.get());
         return next.get();
     }