chore: changelog entry

Signed-off-by: Andrey <andrekabatareika@gmail.com>

Author: ankddev

CHANGELOG.md

@@ -208,4 +208,7 @@
 
 - Fixed a bug where the package cache would not properly be reset when a version
   of a package was replaced on Hex.
-  ([Surya Rose](https://github.com/GearsDatapacks))
+  ([Surya Rose](https://github.com/GearsDatapacks))
+
+- `gleam add` now adds correct constraints for pre-release versions.
+  ([Andrey Kozhev](https://github.com/ankddev))