build(deps-dev): bump helmet from 5.1.1 to 6.0.0 (#164)

Bumps [helmet](https://github.com/helmetjs/helmet) from 5.1.1 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@v5.1.1...v6.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -36,7 +36,7 @@
     "@types/node": "^18.0.1",
     "cors": "^2.8.5",
     "fastify": "^4.0.0-rc.2",
-    "helmet": "^5.0.0",
+    "helmet": "^6.0.0",
     "serve-static": "^1.14.1",
     "simple-get": "^4.0.0",
     "standard": "^17.0.0",