ref: Add external contributor to CHANGELOG.md (#14178)

This PR adds the external contributor to the CHANGELOG.md file, so that
they are credited for their contribution. See #14144

Co-authored-by: AbhiPrasad <[email protected]>

Author: HazAT

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 @rexxars. Thank you for your contribution!
+
 - **feat(nuxt): Add `piniaIntegration` ([#14138](https://github.com/getsentry/sentry-javascript/pull/14138))**
 
 The Nuxt SDK now allows you to track Pinia state for captured errors. To enable the Pinia plugin, add the `piniaIntegration` to your client config: