fix(db-mongodb): bump mongoose to 8.15.1 (#12755)

Updates the `mongoose` package to the latest version `8.15.1`.
Fixes https://github.com/payloadcms/payload/issues/12708

packages/db-mongodb/package.json

@@ -47,7 +47,7 @@
     "prepublishOnly": "pnpm clean && pnpm turbo build"
   },
   "dependencies": {
-    "mongoose": "8.9.5",
+    "mongoose": "8.15.1",
     "mongoose-paginate-v2": "1.8.5",
     "prompts": "2.4.2",
     "uuid": "10.0.0"
@@ -57,7 +57,7 @@
     "@types/mongoose-aggregate-paginate-v2": "1.0.12",
     "@types/prompts": "^2.4.5",
     "@types/uuid": "10.0.0",
-    "mongodb": "6.12.0",
+    "mongodb": "6.16.0",
     "mongodb-memory-server": "10.1.4",
     "payload": "workspace:*"
   },