ci: bump actions/upload-artifact from 6.0.0 to 7.0.1 - #383

The process '/usr/bin/xvfb-run' failed with exit code 1

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: 1CDevFlow/onec-setup-action@main, actions/checkout@v4.2.2, coactions/setup-xvfb@v1, otymko/setup-onescript@v1.5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/