package version bump

package.json

@@ -5,7 +5,7 @@
     "@rails/actioncable": "^6.0.0-alpha",
     "@rails/activestorage": "^6.0.0-alpha",
     "@rails/ujs": "^6.0.0-alpha",
-    "@rails/webpacker": "^4.0.7",
+    "@rails/webpacker": "~> 5.x",
     "turbolinks": "^5.2.0"
   },
   "version": "0.1.0",