Bump mongoose from 5.12.7 to 5.13.15

Bumps [mongoose](https://github.com/Automattic/mongoose) from 5.12.7 to 5.13.15.
- [Release notes](https://github.com/Automattic/mongoose/releases)
- [Changelog](https://github.com/Automattic/mongoose/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Automattic/mongoose/compare/5.12.7...5.13.15)

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

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

package.json

@@ -24,7 +24,7 @@
     "express": "^4.18.2",
     "express-mongo-sanitize": "^2.1.0",
     "log-timestamp": "^0.3.0",
-    "mongoose": "^5.12.7",
+    "mongoose": "^5.13.15",
     "nodemailer": "^6.6.1"
   },
   "devDependencies": {