fix bug

Author: pitycycy

.github/workflows/upload_file.yml

@@ -8,7 +8,7 @@ jobs:
       - name: Download File
         run: wget https://github.com/pitycycy/example-github-actions-helloworld/raw/refs/heads/main/hello.txt
       # 这将从您的工作流中上传工件，且允许您在工作流完成后在作业之间共享数据并存储数据
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: my-artifact               # 文件名称
           path: hello.txt                 # 文件路径