fix: sync patient updated_at when visit is created or updated

app/Providers/AppServiceProvider.php

@@ -18,6 +18,7 @@
 use App\Observers\PatientIllnessObserver;
 use App\Observers\PatientObserver;
 use App\Observers\SyncObserver;
+use App\Observers\VisitObserver;
 use App\Filament\Widgets\VisitStatsWidget;
 use Filament\Actions\DeleteAction;
 use Filament\Actions\DeleteBulkAction;
@@ -59,6 +60,7 @@ public function boot(): void
         Prescription::observe($observer);
         SurgeryAppointment::observe($observer);
         Visit::observe($observer);
+        Visit::observe(VisitObserver::class);
         User::observe($observer);
         Role::observe($observer);