Bump github.com/gofiber/helmet/v2 from 2.1.5 to 2.1.6

Bumps [github.com/gofiber/helmet/v2](https://github.com/gofiber/helmet) from 2.1.5 to 2.1.6.
- [Release notes](https://github.com/gofiber/helmet/releases)
- [Commits](https://github.com/gofiber/helmet/compare/v2.1.5...v2.1.6

)

---
updated-dependencies:
- dependency-name: github.com/gofiber/helmet/v2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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