update CHANGELOG

CHANGELOG.md

@@ -100,6 +100,7 @@ BUG FIXES:
   * builder/amazon: Improved retry logic around waiting for instances. [GH-1764]
   * builder/amazon: Fix issues with creating Block Devices. [GH-2195]
   * builder/amazon/chroot: Retry waiting for disk attachments [GH-2046]
+  * builder/amazon/chroot: Only unmount path if it is mounted [GH-2054]
   * builder/amazon/instance: Use `-i` in sudo commands so PATH is inherited. [GH-1930]
   * builder/amazon/instance: Use `--region` flag for bundle upload command. [GH-1931]
   * builder/digitalocean: Wait for droplet to unlock before changing state,