Update Actions workflow

.github/workflows/ci.yml

@@ -18,12 +18,10 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-        pip install pytest #确保安装pytest
+        pip install numpy pandas pytest
 
     - name: Run tests
-      run: |
-        pytest  # 假设你使用 pytest 来测试代码
+      run: pytest