Add pyside6 runs to github automated testing #1270
Description
What's the problem this feature will solve?
Helpful to tell if a patch is going to break any pyside6 functionality (especially if user is developing on pyqt5).
Ideally a patch should still pass all tests on both pyqt5 and pyside6.
Describe the solution you'd like.
These could not block-merging for now since still gets some failures.
Perhaps just add runs for python 3.13.5 and latest pyside6 on linux + mac + windows
Additional context.
No response