Update actions/download-artifact action to v4.1.8

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/download-artifact	action	patch	v4.1.7 -> v4.1.8

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Release Notes

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

### [`v4.1.8`](https://redirect.github.com/actions/download-artifact/releases/tag/v4.1.8) [Compare Source](https://redirect.github.com/actions/download-artifact/compare/v4.1.7...v4.1.8) #### What's Changed - Update [@​actions/artifact](https://redirect.github.com/actions/artifact) version, bump dependencies by [@​robherley](https://redirect.github.com/robherley) in [https://github.com/actions/download-artifact/pull/341](https://redirect.github.com/actions/download-artifact/pull/341) **Full Changelog**: https://github.com/actions/download-artifact/compare/v4...v4.1.8

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Configuration

📅 Schedule: Branch creation - "before 4am" in timezone America/Chicago, 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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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.36%. Comparing base (9f9587c) to head (1e0eef8). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #605 +/- ## ======================================= Coverage 94.36% 94.36% ======================================= Files 9 9 Lines 870 870 Branches 121 121 ======================================= Hits 821 821 Misses 22 22 Partials 27 27 ```

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