Update registry.gitlab.com/gitlab-org/cloud-native/preflight Docker tag to v1.16.0

This MR contains the following updates:

Package	Update	Change
registry.gitlab.com/gitlab-org/cloud-native/preflight	minor	1.14.0 -> 1.16.0

Notes for Reviewer

• For security reasons, our Renovate fork cannot trigger chart pipelines
  • ⚠️ Reviewer needs to initiate new MR pipeline, subsequently triggering chart pipeline from it. ⚠️

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this MR and you won't be reminded about this update again.

---

• If you want to rebase/retry this MR, check this box

---

This MR has been generated by Renovate Bot.