Bump mongoose from 5.0.3 to 5.7.5

Bumps [mongoose](https://github.com/Automattic/mongoose) from 5.0.3 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@5.0.3...5.7.5)

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

Author: dependabot[bot]

package-lock.json

@@ -36,7 +36,7 @@
     "jsonwebtoken": "^8.1.0",
     "lodash": "^4.17.4",
     "mongodb": "*",
-    "mongoose": "^5.0.3",
+    "mongoose": "^5.7.5",
     "morgan": "^1.9.0",
     "multer": "^1.3.0",
     "passport": "*",