fix(deps): update dependency express to v5

Author: renovate[bot]

package.json

@@ -94,7 +94,7 @@
     "cors": "^2.8.5",
     "date-fns": "^4.0.0",
     "dotenv": "^16.4.1",
-    "express": "^4.18.2",
+    "express": "^5.0.0",
     "express-async-errors": "^3.1.1",
     "i18next": "^23.0.0",
     "langchain": "^0.3.30",