Replace apt with apt-get, which is better for scripts.

Author: HexDecimal

.github/workflows/python-package.yml

@@ -26,8 +26,8 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install APT dependencies
       run: |
-        sudo apt update
-        sudo apt install libsdl2-dev xvfb
+        sudo apt-get update
+        sudo apt-get install libsdl2-dev xvfb
     - name: Install Python dependencies
       run: |
         python -m pip install --upgrade pip