Update aquasec/trivy Docker tag to v0.21.1

This MR contains the following updates:

Package	Type	Update	Change
aquasec/trivy	ironbank-docker	patch	0.21.0 -> 0.21.1
aquasec/trivy		patch	0.21.0 -> 0.21.1
aquasec/trivy	stage	patch	0.21.0 -> 0.21.1

---

Configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled due to failing status checks.

♻ 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.