Bump mongoose from 5.6.6 to 5.7.5

Bumps [mongoose](https://github.com/Automattic/mongoose) from 5.6.6 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@5.6.6...5.7.5)

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

Author: dependabot[bot]

package-lock.json

@@ -28,7 +28,7 @@
     "iconv-lite": "^0.5.0",
     "jsonwebtoken": "^8.5.1",
     "memory-cache": "^0.2.0",
-    "mongoose": "^5.6.6",
+    "mongoose": "^5.7.5",
     "nanoid": "^2.0.3",
     "query-string": "^6.8.1",
     "request": "^2.88.0",