title: Model::insert() is not updating timestamps
body: <p>I added the timestamps in the Migration(Schema) and the model</p>
  
  <pre><code>$table-&gt;timestamps();  //In the Schema
  
  public $timestamps = true; //In the model
  </code></pre>
  
  <p>I made an array with all fields of the database and inserted into the database.</p>
  
  <pre><code>Checkin::insert($input);
  </code></pre>
  
  <p>In the table, it updates all the fields except the updated_at, created_at timestamps</p>
  
  <p>I have another(default) model for Users and it updates the timestamps. In that model, I am using the ->save() method</p>