chore(deps-dev): bump mongoose from 4.7.2 to 5.7.5

Bumps [mongoose](https://github.com/Automattic/mongoose) from 4.7.2 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@4.7.2...5.7.5)

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

Author: dependabot[bot]

package-lock.json

@@ -30,7 +30,7 @@
     "@types/lodash": "^4.14.37",
     "chai": "^3.5.0",
     "mocha": "^3.1.2",
-    "mongoose": "^4.6.3",
+    "mongoose": "^5.7.5",
     "typescript": "^2.1.4"
   },
   "dependencies": {