updating the website download links is too error prone
The combination of (a) Gitlab's generic package UI mis-aligning table cells and suppressing copy-paste, (b) the opaque download URLs, and (c) the sheer volume of release artifacts we offer makes it almost impossible to submit a correct Graphviz website update. I think we should alter the deploy script to print a suitable diff for the website, so we can then copy-paste this from the CI log to avoid typos.