Bump mongodb from 2.2.11 to 3.1.13

Bumps [mongodb](https://github.com/mongodb/node-mongodb-native) from 2.2.11 to 3.1.13.
- [Release notes](https://github.com/mongodb/node-mongodb-native/releases)
- [Changelog](https://github.com/mongodb/node-mongodb-native/blob/master/CHANGES_3.0.0.md)
- [Commits](mongodb/node-mongodb-native@V2.2.11...v3.1.13)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -43,7 +43,7 @@
     "ip": "^1.1.5",
     "memory-cache": "^0.2.0",
     "moment": "^2.24.0",
-    "mongodb": "2.2.11",
+    "mongodb": "3.1.13",
     "morgan": "^1.9.1",
     "node-uuid": "^1.4.8",
     "painless-config": "^0.1.1",