BLD-5911 update docutil link to 3rd party repo pinning version

Author: sjackson-ccdc

tasks/clear-the-dock.yml

@@ -12,3 +12,5 @@
 - name: clear the dock
   include_role:
     name: fubarhouse.macdock
+  vars:
+    dockutil_url: https://raw.githubusercontent.com/kcrawford/dockutil/2.0.5/scripts/dockutil