riot-logo.zip: fix rendering error in riot-logo.svg

[miri64]

This fixes the rendering/plotting issue I reported the other day on matrix. The ZIP file is a larger now, since the conversion by Inkscape uses absolute positions instead of relative positions now (compared to the original Adobe Illustrator export, which was faulty).

[github-actions[bot]]

🚀 PR preview deployed to https://RIOT-OS-riot-os-org-preview-111.surge.sh