Update sonarqube Docker tag

This MR contains the following updates:

Package	Type	Update	Change
sonarqube		minor	10.5.1-developer -> 10.6.0-developer
sonarqube		minor	10.5-developer -> 10.6-developer
sonarqube	ironbank-docker	minor	10.5.1-developer -> 10.6.0-developer
sonarqube	stage	minor	10.5.1-developer -> 10.6.0-developer

---

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.

👻 Immortal: This MR will be recreated if closed unmerged. Get config help if that's undesired.

---

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

---

This MR has been generated by Renovate Bot.