Add Zakaria Ridouh to contributors.json on the WebKit GitHub repository.
<rdar://problem/131211674>
Pull request: https://github.com/WebKit/WebKit/pull/30539
Committed 280709@main (05b156066b3e): <https://commits.webkit.org/280709@main> Reviewed commits have been landed. Closing PR #30539 and removing active labels.