Install express-rate-limit

Author: jspahrsummers

package-lock.json

@@ -50,6 +50,7 @@
     "cors": "^2.8.5",
     "eventsource": "^3.0.2",
     "express": "^5.0.1",
+    "express-rate-limit": "^7.5.0",
     "pkce-challenge": "^4.1.0",
     "raw-body": "^3.0.0",
     "zod": "^3.23.8",