build(deps): bump mongoose from 5.6.9 to 5.7.5

Bumps [mongoose](https://github.com/Automattic/mongoose) from 5.6.9 to 5.7.5.
- [Release notes](https://github.com/Automattic/mongoose/releases)
- [Changelog](https://github.com/Automattic/mongoose/blob/master/History.md)
- [Commits](Automattic/mongoose@5.6.9...5.7.5)

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

Author: dependabot[bot]

package-lock.json

@@ -19,7 +19,7 @@
         "express-jwt": "^5.3.1",
         "jsonwebtoken": "^8.5.1",
         "mongodb": "^3.2.7",
-        "mongoose": "^5.6.9",
+        "mongoose": "^5.7.5",
         "rootpath": "^0.1.2"
     },
     "devDependencies": {