fix PySide6

Author: JaskRendix

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
           libegl1 \
           libgl1
         python -m pip install --upgrade pip
-        pip install PyQt6
+        pip install PySide6
         pip install .[test]
 
     - name: Execute Full Automated Test Suite