Laravel bus chain runs multiple times

I have a model in my custom package

this model has an observer that registered in the package service provider boot method

here is the observer source :

class DedicatedServerObserver
{
    /**
     * Handle the DedicatedServer "created" event.
     *
     * @param  DedicatedServer $dedicatedServer
     * @return void
     */
    public function created(DedicatedServer $dedicatedServer)
    {
        // Create a Virtualizor Connection
        $virtualizor = new Virtualizor($dedicatedServer->ip , $dedicatedServer->port , $dedicatedServer->api_key, $dedicatedServer->api_sec);

        // Run a Chain of Jobs for Sync Server Data
        Bus::chain(
            [
                new AllowServerTrafficOnCSF($dedicatedServer, $virtualizor),
                new SyncIPPools($dedicatedServer, $virtualizor),
                new SyncIPs($dedicatedServer,$virtualizor),
                new SyncOSTemplates($dedicatedServer, $virtualizor),
                new SyncStorages($dedicatedServer, $virtualizor),
                new SyncPlans($dedicatedServer, $virtualizor),
                new SyncVPSes($dedicatedServer, $virtualizor),
                new SetLastSync($dedicatedServer),
            ]
        )->onConnection('database')->onQueue('ip-service')->dispatch();
    }

    /**
     * Handle the DedicatedServer "updated" event.
     *
     * @param  DedicatedServer $dedicatedServer
     * @return void
     */
    public function updated(DedicatedServer $dedicatedServer)
    {
        // Create a Virtualizor Connection
        $virtualizor = new Virtualizor($dedicatedServer->ip , $dedicatedServer->port , $dedicatedServer->api_key, $dedicatedServer->api_sec);

        // Run a Chain of Jobs for Sync Server Data
        Bus::chain(
            [
                new AllowServerTrafficOnCSF($dedicatedServer, $virtualizor),
                new SyncIPPools($dedicatedServer, $virtualizor),
                new SyncIPs($dedicatedServer,$virtualizor),
                new SyncOSTemplates($dedicatedServer, $virtualizor),
                new SyncStorages($dedicatedServer, $virtualizor),
                new SyncPlans($dedicatedServer, $virtualizor),
                new SyncVPSes($dedicatedServer, $virtualizor),
                new SetLastSync($dedicatedServer),
            ]
        )->onConnection('database')->onQueue('ip-service')->dispatch();

        return;
    }
}

Now when I update the model this bus chain runs many times and non-stop and I don't know what the problem is.

the created method runs 1 time and it's okay but the updated method makes a new job every time it runs.