:seedling: Update image docker.io/library/alpine to v3.20.0

[syself-bot[bot]]

This PR contains the following updates:

Package	Type	Update	Change
docker.io/library/alpine	final	minor	3.19.1 -> 3.20.0
docker.io/library/alpine	stage	minor	3.19.1 -> 3.20.0

---

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 PR becomes conflicted, or you tick the rebase/retry checkbox.

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

---

• [ ] If you want to rebase/retry this PR, check this box