meta: bump actions/download-artifact from 4.1.7 to 4.1.8

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@65a9edc...fa0a91b)

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

Signed-off-by: dependabot[bot] <support@github.com>
PR-URL: #54167
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: dependabot[bot]

.github/workflows/build-tarball.yml

@@ -75,7 +75,7 @@ jobs:
       - name: Environment Information
         run: npx envinfo
       - name: Download tarball
-        uses: actions/download-artifact@65a9edc5881444af0b9093a5e628f2fe47ea3b2e  # v4.1.7
+        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16  # v4.1.8
         with:
           name: tarballs
           path: tarballs