Bump mongoose from 8.9.0 to 8.9.4 in /server

Bumps [mongoose](https://github.com/Automattic/mongoose) from 8.9.0 to 8.9.4.
- [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/8.9.0...8.9.4)

---
updated-dependencies:
- dependency-name: mongoose
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

server/package-lock.json

@@ -14,7 +14,7 @@
         "express": "^4.21.2",
         "joi": "^17.13.3",
         "jsonwebtoken": "^9.0.2",
-        "mongoose": "^8.9.0"
+        "mongoose": "^8.9.4"
       },
       "devDependencies": {
         "@types/bcrypt": "^5.0.2",
@@ -1364,10 +1364,9 @@
       }
     },
     "node_modules/mongoose": {
-      "version": "8.9.0",
-      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-8.9.0.tgz",
-      "integrity": "sha512-b58zY3PLNBcoz6ZXFckr0leJcVVBMAOBvD+7Bj2ZjghAwntXmNnqwlDixTKQU3UYoQIGTv+AQx/0ThsvaeVrCA==",
-      "license": "MIT",
+      "version": "8.9.4",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-8.9.4.tgz",
+      "integrity": "sha512-DndoI01aV/q40P9DiYDXsYjhj8vZjmmuFwcC3Tro5wFznoE1z6Fe2JgMnbLR6ghglym5ziYizSfAJykp+UPZWg==",
       "dependencies": {
         "bson": "^6.10.1",
         "kareem": "2.6.3",