chore(deps): update docker.io/library/haproxy:2.8-alpine docker digest to 702ca3f

This MR contains the following updates:

Configuration

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

🚦 Automerge: Enabled.

♻ 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. The local configuration can be found in the SI Renovate Bot repository.