Added React entry-points change to DevTools changelog

Author: Brian Vaughn

packages/react-devtools/CHANGELOG.md

@@ -10,6 +10,9 @@
 </details>
 
 ## 4.13.3 (May 18, 2021)
+#### Misc
+* Updated `react` and `react-dom` API imports in preparation for upcoming stable release ([bvaughn](https://github.com/bvaughn) in [#21488](https://github.com/facebook/react/pull/21488))
+
 #### Bugfix
 * Reload all roots after Fast Refresh force-remount (to avoid corrupted Store state) ([bvaughn](https://github.com/bvaughn) in [#21516](https://github.com/facebook/react/pull/21516))
 * Errors thrown by Store can be dismissed so DevTools remain usable in many cases ([bvaughn](https://github.com/bvaughn) in [#21520](https://github.com/facebook/react/pull/21520))