fix: upgrade mongodb from 3.1.13 to 3.7.3 (#218)

Snyk has created this PR to upgrade mongodb from 3.1.13 to 3.7.3.

See this package in npm:
https://www.npmjs.com/package/mongodb

See this project in Snyk:
https://app.snyk.io/org/jgowdy/project/70fbeb05-9d70-4742-bfc8-2967637af789?utm_source=github&utm_medium=referral&page=upgrade-pr

Co-authored-by: snyk-bot <[email protected]>

Author: jgowdy-godaddy

example/mongo/package-lock.json

@@ -9,6 +9,6 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "mongodb": "^3.1.13"
+    "mongodb": "^3.7.3"
   }
 }