Prevent cron.php to trigger apps updating

cron.php

@@ -48,6 +48,11 @@ try {
 
 	require_once 'lib/base.php';
 
+	if (\OCP\Util::needUpgrade()) {
+		\OCP\Util::writeLog('cron', 'Update required, skipping cron', \OCP\Util::DEBUG);
+		exit();
+	}
+
 	// load all apps to get all api routes properly setup
 	OC_App::loadApps();