update changelog

Author: vincentsarago

CHANGES.md

@@ -2,7 +2,14 @@
 
 ## [Unreleased]
 
-- remove support of `cql-json` in Filter extension
+### Changed
+
+- remove support of `cql-json` in Filter extension ([#840](https://github.com/stac-utils/stac-fastapi/pull/840))
+
+### Fixed
+
+- add `py.typed` to package distributions ([#842](https://github.com/stac-utils/stac-fastapi/pull/842))
+- update/fix type informations ([#842](https://github.com/stac-utils/stac-fastapi/pull/842))
 
 ## [5.2.1] - 2025-04-18