Merge pull request matplotlib#15720 from anntzer/triage-tests-38warn

Suppress triage_tests warning on Py3.8.

Author: timhoffm

tools/triage_tests.py

@@ -68,7 +68,7 @@ def __init__(self, parent, index, name):
         self.image = QtWidgets.QLabel()
         self.image.setAlignment(QtCore.Qt.AlignHCenter |
                                 QtCore.Qt.AlignVCenter)
-        self.image.setMinimumSize(800/3, 600/3)
+        self.image.setMinimumSize(800 // 3, 600 // 3)
         layout.addWidget(self.image)
         self.setLayout(layout)