update qt to 6.3.1

main.py

@@ -1,6 +1,5 @@
 import logging
 import signal
-import ctypes
 
 from PySide6 import QtCore
 from PySide6.QtWidgets import QApplication
@@ -38,6 +37,7 @@ if __name__ == "__main__":
     # see https://stackoverflow.com/questions/1551605/how-to-set-applications-taskbar-icon-in-windows-7/1552105#1552105
     if sys.platform == 'win32' or sys.platform == 'cygwin':
         myappid = 'krowlog'  # arbitrary string
+        import ctypes
         ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID(myappid)
 
     # workaround to make signals work in QT apps.