Bump mongoose from 4.13.21 to 5.7.5

Bumps [mongoose](https://github.com/Automattic/mongoose) from 4.13.21 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@4.13.21...5.7.5)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -31,7 +31,7 @@
     "install": "^0.5.4",
     "lodash": "^4.6.0",
     "moment": "^2.11.2",
-    "mongoose": "^4.4.5",
+    "mongoose": "^5.7.5",
     "npm": "^6.14.6",
     "path": "^0.12.7",
     "request": "^2.69.0",