Updated tk-photoshopcc to v1.9.1

Release notes: https://github.com/shotgunsoftware/tk-photoshopcc/wiki/Release-Notes#v191

Author: Toolkitty

env/includes/common/engines.yml

@@ -35,7 +35,7 @@ common.engines.tk-nuke.location:
 common.engines.tk-photoshopcc.location:
   type: app_store
   name: tk-photoshopcc
-  version: v1.9.0
+  version: v1.9.1
 common.engines.tk-aftereffects.location:
   type: app_store
   name: tk-aftereffects