Update package json to fix the flat-map error

Author: KrisTemmerman

package.json

@@ -61,7 +61,7 @@
     "microframework-w3tec": "^0.6.3",
     "morgan": "^1.9.0",
     "nodemon": "^1.12.1",
-    "nps": "^5.7.1",
+    "nps": "^5.9.3",
     "nps-utils": "^1.5.0",
     "pg": "^7.4.3",
     "reflect-metadata": "^0.1.10",