Upgrade upload artifact again

Author: kyleju

.github/workflows/test.yml

@@ -29,7 +29,7 @@ jobs:
         run: |
           mkdir -p ./pr
           echo $PR_NUMBER > ./pr/pr_number.txt
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: pr_number
           path: pr/