chore: Update express dependency to version 5.2.1

Author: LukeSchlangen

run/helloworld/package.json

@@ -18,7 +18,7 @@
   "author": "Google LLC",
   "license": "Apache-2.0",
   "dependencies": {
-    "express": "^4.17.1"
+    "express": "^5.2.1"
   },
   "devDependencies": {
     "c8": "^10.0.0",