contrib: fix creating cron jobs first time

Author: ioanok

contrib/crontab.php

@@ -66,7 +66,7 @@
 
         // Create the section
         $cronJobs[] = $sectionStart;
-        $cronJobs += $cronJobsLocal;
+        $cronJobs = [...$cronJobs, ...$cronJobsLocal];
         $cronJobs[] = $sectionEnd;
         writeln("Crontab: Found no section, created the section with configured jobs");
     } else {