Fix test run on qt6

Author: nyalldawson

slyr_community/test/qgis_interface.py

@@ -25,7 +25,7 @@
 
 import logging
 from typing import List
-from PyQt5.QtCore import QObject, pyqtSlot, pyqtSignal, QSize
+from qgis.PyQt.QtCore import QObject, pyqtSlot, pyqtSignal, QSize
 from qgis.PyQt.QtWidgets import QDockWidget
 from qgis.core import QgsProject, QgsMapLayer
 from qgis.gui import QgsMapCanvas, QgsMessageBar