change pip install in actions

.github/workflows/python-package.yml

@@ -26,7 +26,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install flake8 pytest pytest-cov scikit-learn black>=23.3.0 isort>=5.0.6
-          pip install ."[dev, all]"; fi
+          pip install ."[dev, all]"
       - name: Lint with flake8
         run: |
           # stop the build if there are Python syntax errors or undefined names