update: add notice tags

app/Models/Notice.php

@@ -11,6 +11,7 @@ class Notice extends Model
     protected $guarded = ['id'];
     protected $casts = [
         'created_at' => 'timestamp',
-        'updated_at' => 'timestamp'
+        'updated_at' => 'timestamp',
+        'tags' => 'array'
     ];
 }