fix(deps): update dependency helmet to v8 (#53)

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

Author: renovate[bot]

package.json

@@ -19,7 +19,7 @@
     "express": "4.21.2",
     "express-rate-limit": "7.5.0",
     "graphql-request": "7.2.0",
-    "helmet": "7.2.0",
+    "helmet": "8.1.0",
     "morgan": "1.10.0",
     "nunjucks": "3.2.4",
     "winston": "3.17.0"