Updated tk-vred to v3.1.1

Release notes: https://github.com/shotgunsoftware/tk-vred/wiki/Release-Notes#v311

Author: toolkitty

env/includes/common/engines.yml

@@ -51,7 +51,7 @@ common.engines.tk-alias.location:
 common.engines.tk-vred.location:
   type: app_store
   name: tk-vred
-  version: v3.1.0
+  version: v3.1.1
 common.engines.tk-desktop.location:
   type: app_store
   name: tk-desktop