title: Laravel Carbon cast datetime to set seconds to 00
body: <p>If I have variables like this:</p>
  
  <pre><code>$arivalTime1 = '2020-06-05 15:52:27'
  $arivalTime2 = '2020-06-05 15:52:55'
  </code></pre>
  
  <p>how can I convert these variables using Carbon to have the seconds displayed as 00:</p>
  
  <pre><code>$converted1 = 2020-06-05 15:52:00
  $converted2 = 2020-06-05 15:52:00
  </code></pre>