Add testing with pyqt5

Closes #146 (closed)

.gitlab-ci.yml

@@ -69,7 +69,23 @@ run-test-3.10-pyqt5:
   image: python:3.10
   extends: ".run-test"
 
+run-test-3.10-pyside6:
+  variables:
+    QT_API: pyside6
+  image: python:3.10
+  extends: ".run-test"
+  allow_failure: true
+
+run-test-3.10-pyqt6:
+  variables:
+    QT_API: pyqt6
+  image: python:3.10
+  extends: ".run-test"
+  allow_failure: true
+
 run-doc-test:
+  variables:
+    QT_API: pyside2
   image: python:3.10
   stage: test
   script:
@@ -80,6 +96,8 @@ run-doc-test:
 #  extends: ".run-test"
 
 pages:
+  variables:
+    QT_API: pyqt5
   stage: deploy
   image: python:3.10
   script: