Update dependency helmet to v8

Author: renovate[bot]

package-lock.json

@@ -14,7 +14,7 @@
     "dotenv": "^16.4.5",
     "express": "^4.19.2",
     "express-ws": "^5.0.2",
-    "helmet": "^7.1.0",
+    "helmet": "^8.0.0",
     "jsonwebtoken": "^9.0.2",
     "mongoose": "^8.5.1",
     "multer": "^1.4.4",