chore(deps): update dawidd6/action-download-artifact action to v6 (#6921)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/benchmark-post.yml

@@ -12,7 +12,7 @@ jobs:
       # This posts the status to the PR/commit
       - uses: haya14busa/action-workflow_run-status@v1
       - name: Download deltas
-        uses: dawidd6/action-download-artifact@v3
+        uses: dawidd6/action-download-artifact@v6
         with:
           # This is the workflow that triggered this run
           workflow: ${{ github.event.workflow.id }}