fix(deps): update dependency express to v5

Author: renovate[bot]

package.json

@@ -6,7 +6,7 @@
   },
   "dependencies": {
     "dotenv": "16.4.4",
-    "express": "4.20.0",
+    "express": "5.1.0",
     "resend": "latest"
   },
   "devDependencies": {