Update node_js requirements

Author: mdmintz

integrations/node_js/package.json

@@ -6,12 +6,12 @@
     "start": "node ./bin/www"
   },
   "dependencies": {
-    "body-parser": "~1.15.1",
+    "express": "~4.16.3",
+    "body-parser": "~1.18.3",
     "cookie-parser": "~1.4.3",
-    "debug": "~2.2.0",
-    "express": "~4.13.4",
-    "pug": "~2.0.0-alpha6",
-    "morgan": "~1.7.0",
-    "serve-favicon": "~2.3.0"
+    "debug": "^3.1.0",
+    "pug": "~2.0.3",
+    "morgan": "^1.9.0",
+    "serve-favicon": "^2.5.0"
   }
 }