Update python-app.yml

Author: alporak

.github/workflows/python-app.yml

@@ -28,6 +28,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install flake8 pytest
+        apt install libegl1
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
     - name: Lint with flake8
       run: |