chore: Add external contributor to CHANGELOG.md (#21399)

This PR adds the external contributor to the CHANGELOG.md file, so that
they are credited for their contribution. See #21356

Co-authored-by: isaacs <9287+isaacs@users.noreply.github.com>
Co-authored-by: Nicolas Hrubec <nicolas.hrubec@outlook.com>

Author: 3 people

CHANGELOG.md

@@ -18,6 +18,8 @@
   // → sentry.message.template: "Hello {} {}"
   ```
 
+Work in this release was contributed by @archievi. Thank you for your contribution!
+
 ## 10.57.0
 
 ### Important Changes