changed to apt-get

.github/workflows/ci.yml

@@ -79,7 +79,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          apt install wkhtmltopdf
+          sudo apt-get install wkhtmltopdf
           pip install flake8 pytest
           if [ -f requirements.txt ]; then pip install -r requirements.txt; fi