fix(package): update moment-timezone to version 0.5.31

Closes #96

Author: greenkeeper[bot]

package.json

@@ -41,7 +41,7 @@
     "hbs": "4.0.4",
     "inquirer": "6.4.1",
     "moment": "2.24.0",
-    "moment-timezone": "0.5.25",
+    "moment-timezone": "0.5.31",
     "mongoose": "5.6.2",
     "morgan": "1.9.1",
     "passport": "0.4.0",