chore: bump GitHub Actions(deps): bump actions/download-artifact

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.3.0 to 6.0.0.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@d3f86a1...018cc2c)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/publish-pypi.yml

@@ -64,7 +64,7 @@ jobs:
       id-token: write  # this permission is mandatory for PyPI publishing
     steps:
       - name: Download all the dists
-        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v4
         with:
           name: python-package-distributions
           path: dist/