Bump actions/download-artifact from 3 to 4.1.7 in /.github/workflows

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.1.7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4.1.7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/publish.yaml

@@ -63,7 +63,7 @@ jobs:
           sudo snap install yq
           sudo snap install rockcraft --classic --edge    
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4.1.7
         with:
           name: charmed-karapace