fix(deps): update docker digest to 56ef400

This MR contains the following updates:

Package	Update	Change
docker	digest	88bc418 -> 56ef400

---

Configuration

📅 Schedule: Branch creation - "before 2am" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever MR is behind base branch, 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, click this checkbox.

---

This MR has been generated by Renovate Bot.