Bump helmet from 5.1.0 to 6.0.0

Bumps [helmet](https://github.com/helmetjs/helmet) from 5.1.0 to 6.0.0.
- [Release notes](https://github.com/helmetjs/helmet/releases)
- [Changelog](https://github.com/helmetjs/helmet/blob/main/CHANGELOG.md)
- [Commits](helmetjs/helmet@v5.1.0...v6.0.0)

---
updated-dependencies:
- dependency-name: helmet
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -18,7 +18,7 @@
     "dotenv": "16.0.1",
     "express": "4.18.1",
     "express-rate-limit": "6.4.0",
-    "helmet": "5.1.0",
+    "helmet": "6.0.0",
     "hpp": "0.2.3",
     "lru-cache": "7.14.0",
     "marker-clusterer-plus": "2.1.4",