Update actions/download-artifact action to v7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/download-artifact	action	major	v6 → v7

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Release Notes

actions/download-artifact (actions/download-artifact)

v7

Compare Source

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Configuration

📅 Schedule: Branch creation - "before 8am on the first day of the month" (UTC), 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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