chore(deps): update actions/upload-artifact action to v6 (#24)

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

Author: renovate[bot]

.github/workflows/overflow-test.yaml

@@ -27,7 +27,7 @@ jobs:
 
       - name: If there is an overflow summary, archive it
         if: ${{steps.generate-summary.outputs.Overflow}}
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: ${{steps.generate-summary.outputs.Overflow}}
           path: ${{steps.generate-summary.outputs.Overflow}}