chore: update download-artifact action to v4

Author: HowieHz

.github/workflows/workflow.yaml

@@ -63,7 +63,7 @@ jobs:
     if: github.event_name == 'release'
     steps:
       - name: Download extra-api jar
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: extra-api
           path: build/libs