chore: add Changed entry to CHANGELOG for deprecated env var

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: brendan-kellam

CHANGELOG.md

@@ -12,6 +12,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added support for configuring SMTP via individual environment variables (SMTP_HOST, SMTP_PORT, SMTP_USERNAME, SMTP_PASSWORD) as an alternative to SMTP_CONNECTION_URL. [#1002](https://github.com/sourcebot-dev/sourcebot/pull/1002)
 - Added `DISABLE_API_KEY_CREATION_FOR_NON_OWNER_USERS` and `DISABLE_API_KEY_USAGE_FOR_NON_OWNER_USERS` environment variables to restrict API key creation and usage to organization owners. [#1007](https://github.com/sourcebot-dev/sourcebot/pull/1007)
 
+### Changed
+- Deprecated `EXPERIMENT_DISABLE_API_KEY_CREATION_FOR_NON_ADMIN_USERS` in favour of `DISABLE_API_KEY_CREATION_FOR_NON_OWNER_USERS`. The old variable will continue to work as a fallback. [#1007](https://github.com/sourcebot-dev/sourcebot/pull/1007)
+
 ## [4.15.6] - 2026-03-13
 
 ### Added