Update python-package.yml

fix python-package

Author: YonkoSam

.github/workflows/python-package.yml

@@ -25,7 +25,7 @@ jobs:
         python -m pip install flake8 pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
         # Install the package in development mode
-        pip install -e .
+        pip install -e .[dev] .
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names