Bump moment version

Author: chris-smith

package.json

@@ -33,7 +33,7 @@
     "bn.js": "^4.11.6",
     "bunyan": "1.8.1",
     "md5": "2.1.0",
-    "moment": "2.12.0",
+    "moment": "2.19.3",
     "ultron": "1.1.0",
     "walker": "1.0.7",
     "xmlrpc": "chfritz/node-xmlrpc"