Log Message:
py-qt6: updated to 6.8.1pre1

PyQt v6.8.0 has been released. This adds support for Qt v6.8.

PyQt6-3D v6.8.0, PyQt6-Charts v6.8.0, PyQt6-DataVisualization v6.8.0, the new \ 
PyQt6-Graphs, PyQt6-NetworkAuth v6.8.0 and PyQt6-WebEngine v6.8.0 have also been \ 
released.

Added support for Qt v6.8 including Qt Graphs.
Python enums are now handled correctly by Qt Designer (requires Qt v6.8.1 or later).
Implemented QtAudio as a synonym for QAudio.
Added QWindow.setVulkanInstance(), QWindow.vulkanInstance(), QVulkanExtension, \ 
QVulkanInstance and QVulkanLayer.