Bump actions/download-artifact from 4 to 6 (#279)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4 to 6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v6)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/publish-release.yml

@@ -44,7 +44,7 @@ jobs:
           is-high-risk-environment: true
           ref: ${{ github.sha }}
       - name: Restore build artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: publish-release-artifacts-${{ github.sha }}
       - name: Dry Run Publish
@@ -67,7 +67,7 @@ jobs:
           is-high-risk-environment: true
           ref: ${{ github.sha }}
       - name: Restore build artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: publish-release-artifacts-${{ github.sha }}
       - name: Publish