Actually bump @types/express to 4.17.21.

Author: taeold

package-lock.json

@@ -270,7 +270,7 @@
   },
   "dependencies": {
     "@types/cors": "^2.8.5",
-    "@types/express": "4.21.0",
+    "@types/express": "^4.17.21",
     "cors": "^2.8.5",
     "express": "^4.21.0",
     "protobufjs": "^7.2.2"