chore: update changelog

Author: gadomski

CHANGES.md

@@ -11,6 +11,7 @@
 
 * Updated CI to test against [pgstac v0.6.12](https://github.com/stac-utils/pgstac/releases/tag/v0.6.12) ([#511](https://github.com/stac-utils/stac-fastapi/pull/511))
 * Reworked `update_openapi` and added a test for it ([#523](https://github.com/stac-utils/stac-fastapi/pull/523))
+* Links are no longer part of the default include list ([#524](https://github.com/stac-utils/stac-fastapi/pull/524))
 
 ### Removed