meta: bump actions/download-artifact from 4.1.9 to 4.2.1

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.9 to 4.2.1.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@cc20338...95815c3)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: 4.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
PR-URL: #57719
Reviewed-By: Ulises Gascón <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Tierney Cyren <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>

Author: dependabot[bot]

Diff for: .github/workflows/build-tarball.yml

@@ -86,7 +86,7 @@ jobs:
       - name: Environment Information
         run: npx envinfo
       - name: Download tarball
-        uses: actions/download-artifact@cc203385981b70ca67e1cc392babf9cc229d5806  # v4.1.9
+        uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e  # v4.2.1
         with:
           name: tarballs
           path: tarballs