fix(sbotsserver): add missing setting

lgsm/config-default/config-lgsm/sbotsserver/_default.cfg

@@ -83,6 +83,9 @@ telegramtoken="accesstoken"
 telegramchatid=""
 curlcustomstring=""
 
+## Updating | https://docs.linuxgsm.com/commands/update
+updateonstart="off"
+
 ## Backup | https://docs.linuxgsm.com/commands/backup
 maxbackups="4"
 maxbackupdays="30"