ghost/admin/public/assets/icons/upload.svg
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
<title>upload</title>
<path d="M12.001 15.75v-12m4.5 4.5-4.5-4.5-4.5 4.5m15.75 7.5v1.5a3 3 0 0 1-3 3h-16.5a3 3 0 0 1-3-3v-1.5" style="fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.2px"/>
</svg>