fix(deps): update dependency helmet to v8 (#298)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -25,7 +25,7 @@
     "envalid": "^8.0.0",
     "express": "^4.19.2",
     "express-rate-limit": "^7.2.0",
-    "helmet": "^7.1.0",
+    "helmet": "^8.0.0",
     "http-status-codes": "^2.3.0",
     "pino-http": "^10.0.0",
     "swagger-ui-express": "^5.0.0",