Update alpine Docker tag to v3.20 (master) - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
alpine	docker	minor	3.18 -> 3.20

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Configuration

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

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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

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