Raise unit def version

package.json

@@ -3,7 +3,7 @@
   "config": {
     "player_version": "2.7.2",
     "editor_version": "2.7.2",
-    "unit_definition_version": "4.8.0"
+    "unit_definition_version": "4.9.0"
   },
   "scripts": {
     "ng": "ng",