Merge pull request #563 from FlagAI-Open/zacliu2023-patch-1

Update python-app.yml

.github/workflows/python-app.yml

@@ -26,7 +26,7 @@ jobs:
         python-version: "3.9"
     - name: Install dependencies
       run: |
-        python -m pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
+        python -m pip config set global.index-url http://mirrors.aliyun.com/pypi/simple/
         python -m pip install --upgrade pip
         python -m pip install flake8 pytest
         python -m pip install torch