square-chevron-up from coolicons in Line with regular corners. collapse, close, less, caret, top, box. Other styles and corners: @coolicons/<style>/<radius>/square-chevron-up with line, duocolor, duotone, fill or bulk and sharp or round. Leave out regular, like @coolicons/fill/square-chevron-up, and use @coolicons/square-chevron-up for line with regular corners.
pnpm dlx shadcn@latest add "https://coolicons.cool/r/square-chevron-up.json"