chore(deps): bump actions/download-artifact from 5 to 6 (#765)

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -167,7 +167,7 @@ jobs:
           python-version: "3.13"
 
       - name: Download Artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: coverage-data