Bump actions/download-artifact from 4.1.7 to 4.1.8 (#1770)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.7 to 4.1.8.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4.1.7...v4.1.8)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/qt5_6.yml

@@ -242,7 +242,7 @@ jobs:
           echo '::endgroup::'
 
       - name: 💾 Artifact download
-        uses: actions/[email protected].7
+        uses: actions/[email protected].8
         with:
           pattern: artifact-*
           path: all-artifacts