Update CHANGELOG.md

Signed-off-by: Daniel Rudolf <[email protected]>

Author: PhrozenByte

CHANGELOG.md

@@ -7,6 +7,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [Unreleased] - YYYY-MM-DD
 
 - Add `TZ` env var to change PHP `date.timezone` (#133)
+- Refactor 'update.sh' (#408)
+- Bake download URL, version, sha256 and GPG key into Dockerfiles (#408)
+- Add 'versions.json' with info about latest version and available variants (#408)
 
 ## [5.2.1] - 2023-02-08