fix(deps): update dependency express to v5

Author: renovate[bot]

package.json

@@ -14,7 +14,7 @@
     "@livekit/protocol": "^1.41.0",
     "body-parser": "^2.2.0",
     "dotenv": "^16.4.5",
-    "express": "^4.21.1",
+    "express": "^5.0.0",
     "livekit-server-sdk": "^2.8.1"
   },
   "devDependencies": {