Update fluent/fluentd-kubernetes-daemonset Docker tag to v1.16.1

This MR contains the following updates:

Package	Type	Update	Change
fluent/fluentd-kubernetes-daemonset	ironbank-docker	minor	v1.15.3-debian-elasticsearch7-1.0 -> v1.16.1-debian-elasticsearch7-1.0
fluent/fluentd-kubernetes-daemonset	stage	minor	v1.15.3-debian-elasticsearch7-1.0 -> v1.16.1-debian-elasticsearch7-1.0

---

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 these updates again.

---

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

---

This MR has been generated by Renovate Bot.