Add testing with Python 3.11

Closes #151 (closed)

.gitlab-ci.yml

@@ -71,7 +71,19 @@ run-test-3.10-pyqt5:
   image: python:3.10
   extends: ".run-test"
 
-# Seemingly works with Qt6, but tests stall on closing scheduler GUI due to modal dialog(?)
+run-test-3.11-pyside2:
+  variables:
+    QT_API: pyside2
+  image: python:3.11
+  extends: ".run-test"
+
+run-test-3.11-pyqt5:
+  variables:
+    QT_API: pyqt5
+  image: python:3.11
+  extends: ".run-test"
+
+  # Seemingly works with Qt6, but tests stall on closing scheduler GUI due to modal dialog(?)
 #run-test-3.10-pyside6:
 #  variables:
 #    QT_API: pyside6
@@ -94,10 +106,6 @@ run-doc-test:
   script:
     - sphinx-build -b html docs_sphinx public
 
-#run-test-3.11:
-#  image: python:3.11
-#  extends: ".run-test"
-
 pages:
   variables:
     QT_API: pyqt5