Add Sean Butt to Contributors list (#113274)

Co-authored-by: Sean Butt <sean.butt@opg.com>

Author: seanbutt79

Contributors.md

@@ -41,6 +41,7 @@
 - [yjh7979](https://github.com/yjh7979)
 - [VipulBhattt](https://github.com/VipulBhattt)
 - Max
+- Sean Butt
 - Gonzalo (https://github.com/GonzaloAleo)
 - 23f3000487@ds.study.iitm.ac.in
 -[alejandro soto martinez](https://github.com/Alexsoto042)