[BUENOS-AIRES-2026] Add logo, CFP link, and organizers info#15659

MartinCalderon-x wants to merge 2 commits intodevopsdays:maindevopsdays/devopsdays-web:mainfrom

MartinCalderon-x:update-buenos-aires-2026MartinCalderon-x/devopsdays-web-ba:update-buenos-aires-2026Copy head branch name to clipboard