title: Can't upgrade Android Studio Kotlin plugin to latest (1.4.21)
body: <p>For some reason I have no option to upgrade my Kotlin plugin to the latest version.</p>
  <p>Android Studio shows that the latest (1.4.21) is available:</p>
  <p><a href="https://i.stack.imgur.com/MP336.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MP336.png" alt="enter image description here" /></a></p>
  <p>But my installed version is still 1.3.72 and there's no option to upgrade it:</p>
  <p><a href="https://i.stack.imgur.com/DM50X.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DM50X.png" alt="enter image description here" /></a></p>
  <p>And suggestions? Is there another way to upgrade?</p>
  <p><strong>I'm running Android Studio 4.1.1 stable build on macOS Catalina.</strong></p>
  <p><a href="https://i.stack.imgur.com/ewJvc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ewJvc.png" alt="enter image description here" /></a></p>