Update PaddlePaddle version

.github/workflows/build.yaml

@@ -46,7 +46,7 @@ jobs:
       - name: Upgrade pip
         run: python -m pip install pip --upgrade --user
       - name: Install PaddlePaddle
-        run: python -m pip install paddlepaddle==2.3.1 -i https://mirror.baidu.com/pypi/simple
+        run: python -m pip install paddlepaddle==2.4.0 -i https://pypi.tuna.tsinghua.edu.cn/simple
       - name: Install PaddleRS
         run: |
           python -m pip install -r requirements.txt