Raise version to editor/2.7.3+player/2.7.3

package.json

 {
   "name": "verona-modules-aspect",
   "config": {
-    "player_version": "2.7.2",
-    "editor_version": "2.7.2",
+    "player_version": "2.7.3",
+    "editor_version": "2.7.3",
     "unit_definition_version": "4.8.0"
   },
   "scripts": {