misc: update BACKERS

***NO_CI***

README.md

@@ -155,6 +155,7 @@ Support this project by becoming a sponsor. Your name will show up in the Contri
 - aytaa ([@aytaa](https://github.com/aytaa))
 - magicpotato ([@fortheday](https://github.com/fortheday))
 - motoacs ([@motoacs](https://github.com/motoacs))
+- rburckner ([@rburckner](https://github.com/rburckner))
 - scorpion ([@scorpion](https://github.com/scorpion))
 - valantien ([@valantien](https://github.com/valantien))