Bump mongoose from 6.2.8 to 6.4.6

Bumps [mongoose](https://github.com/Automattic/mongoose) from 6.2.8 to 6.4.6.
- [Release notes](https://github.com/Automattic/mongoose/releases)
- [Changelog](https://github.com/Automattic/mongoose/blob/master/CHANGELOG.md)
- [Commits](Automattic/mongoose@6.2.8...6.4.6)

---
updated-dependencies:
- dependency-name: mongoose
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package-lock.json

@@ -41,7 +41,7 @@
     "lusca": "^1.7.0",
     "mailchecker": "^4.1.14",
     "moment": "^2.29.4",
-    "mongoose": "^6.2.8",
+    "mongoose": "^6.4.6",
     "morgan": "^1.10.0",
     "nanoid": "^4.0.0",
     "node-fetch": "2.6.0",