Update GoldenLine color (#971)
Update GoldenLine color (#971)

Taken straight from the SVG found on their homepage
(https://www.goldenline.pl/), as described in #821.
birjolaxew/simple-icons,danleech/simpleicons.org,danleech/simpleicons.org,birjolaxew/simple-icons,simple-icons/simple-icons,simple-icons/simple-icons,danleech/simple-icons