fix(updatenotification): Skip update check

Signed-off-by: Christopher Ng <chrng8@gmail.com>

apps/updatenotification/lib/Notification/BackgroundJob.php

@@ -57,6 +57,11 @@ class BackgroundJob extends TimedJob {
 	}
 
 	protected function run($argument) {
+		// Do not check for updates if not connected to the internet
+		if (!$this->config->getSystemValueBool('has_internet_connection', true)) {
+			return;
+		}
+
 		if (\OC::$CLI && !$this->config->getSystemValueBool('debug', false)) {
 			try {
 				// Jitter the pinging of the updater server and the appstore a bit.