chore: Add external contributor to CHANGELOG.md

Author: RulaKhaled

CHANGELOG.md

@@ -10,6 +10,8 @@
 
 - "You miss 100 percent of the chances you don't take. — Wayne Gretzky" — Michael Scott
 
+Work in this release was contributed by @RulaKhaled. Thank you for your contribution!
+
 ### Important Changes
 
 - **fix(node): Avoid double-wrapping http module ([#16177](https://github.com/getsentry/sentry-javascript/pull/16177))**