chore(deps): bump actions/upload-artifact from 5 to 6 (#157)

Author: dependabot[bot]

.github/workflows/benchmark.yml

@@ -134,7 +134,7 @@ jobs:
           fi
 
       - name: Upload benchmark results
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: benchmark-results-${{ github.sha }}
           path: |