Update changelog

Author: gonzalocasas

CHANGELOG.rst

@@ -30,7 +30,7 @@ Unreleased
 
 **Changed**
 
-* Updated to ``COMPAS 0.16.1``
+* Updated to ``COMPAS 0.16.9``
 * Renamed ``compas_fab.robots.Robot.to_local_coords`` to ``compas_fab.robots.Robot.to_local_coordinates``
 * Renamed ``compas_fab.robots.Robot.to_world_coords`` to ``compas_fab.robots.Robot.to_world_coordinates``
 * Backend clients have been restructured according to the new interfaces