Update dependency mongodb to v3.7.3

Dependency update (patch)

Author: renovate-bot

package-lock.json

@@ -46,6 +46,6 @@
   },
   "dependencies": {
     "jsonwebtoken": "8.5.1",
-    "mongodb": "3.5.11"
+    "mongodb": "3.7.3"
   }
 }