chore(deps): update dependency @types/node to v9.6.38

Author: renovate-bot

package-lock.json

@@ -69,7 +69,7 @@
     "@types/lodash": "4.14.118",
     "@types/mocha": "5.2.5",
     "@types/mongodb": "2.2.23",
-    "@types/node": "9.6.37",
+    "@types/node": "9.6.38",
     "@types/node-fetch": "1.6.9",
     "@types/source-map-support": "0.4.1",
     "@types/supertest": "2.0.6",