For some reason I don't really understand, we insist on building all our python dependencies from scratch for the AppImage release (except for PyQt5). This is now broken because hidapi no longer builds since Cython 3 was released two days ago.
Use the binary release for hidapi for the time being, until a release with the bugfix https://github.com/trezor/cython-hidapi/commit/749da6931f57c4c30596de678125648ccfd6e1cd is available for hidapi.