Update dependency express to ~4.16.0

Author: dev-mend-for-github-com[bot]

package.json

@@ -11,7 +11,7 @@
     "debug": "~2.2.0",
     "ejs": "^2.4.2",
     "ejs-locals": "^1.0.2",
-    "express": "~4.13.1",
+    "express": "~4.16.0",
     "express-session": "^1.13.0",
     "log4js": "^0.6.36",
     "morgan": "~1.6.1",