Update haproxy:3.2 Docker digest to d721ff8

This MR contains the following updates:

Package	Type	Update	Change
haproxy	ironbank-docker	digest	1cbc821 -> d721ff8

---

⚠️ Warning

Some dependencies could not be looked up. Check the warning logs for more information.

---

Configuration

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

🚦 Automerge: Disabled because a matching MR was automerged previously.

♻️ 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.