chore: Correct dead CODE_OF_CONDUCT link

Author: LuLaValva

.github/CODE_OF_CONDUCT.md

@@ -1,6 +1,6 @@
 # Code of Conduct
 
-This project adheres to the [eBay Code of Conduct](http://ebay.github.io/codeofconduct).
+This project adheres to the [eBay Code of Conduct](https://github.com/eBay/.github/blob/main/CODE_OF_CONDUCT.md).
 By participating in this project you agree to abide by its terms.
 
 - Be friendly and patient.