Update mongodb to the latest version 🚀 (#6348)

* fix(package): update mongodb to version 3.5.0

* chore(package): update lockfile package-lock.json

* Fix shutdown issues

Properly retrieves the number of connections

https://docs.mongodb.com/manual/reference/command/serverStatus/#connections

Bump to 3.5.1

* remove fit

Co-authored-by: Diamond Lewis <findlewis@gmail.com>

package.json

@@ -43,7 +43,7 @@
     "lodash": "4.17.15",
     "lru-cache": "5.1.1",
     "mime": "2.4.4",
-    "mongodb": "3.4.1",
+    "mongodb": "3.5.1",
     "node-rsa": "1.0.7",
     "parse": "2.11.0",
     "pg-promise": "10.4.0",