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@v4.1.9...v4.2.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/release.yaml

@@ -40,7 +40,7 @@ jobs:
     needs: [ config, ci ]
     steps:
     - name: Get build artifacts
-      uses: actions/download-artifact@v4.1.9
+      uses: actions/download-artifact@v4.2.1
       with:
         pattern: Python-*
         path: dist