<!--To help us understand and resolve your issue, please fill out the form to the best of your ability.--> <!--You can feel free to delete the sections that do not apply.--> ### Bug report **Bug summary** In the cibuildwheel configuration there is a condition to pin PyPy wheels on 3.3 https://github.com/matplotlib/matplotlib/blob/14b34fd18685d037fc4d67d40df69b602b22ec7f/.github/workflows/cibuildwheel.yml#L96-L100 Is that on purpose? I would be nice to have PyPy wheels for the latest versions