chore(deps): update dawidd6/action-download-artifact action to v6 (#11314)

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

.github/workflows/size-report.yml

@@ -36,7 +36,7 @@ jobs:
         run: pnpm install
 
       - name: Download PR number
-        uses: dawidd6/action-download-artifact@v3
+        uses: dawidd6/action-download-artifact@v6
         with:
           name: pr-number
           run_id: ${{ github.event.workflow_run.id }}