Update CHANGELOG

Author: cknitt

CHANGELOG.md

@@ -16,6 +16,10 @@
 
 - Fix issue with async and newtype in uncurried mode. https://github.com/rescript-lang/rescript-compiler/pull/6601
 
+#### :house: Internal
+
+- Use OCaml 4.14.1 (+ Alpine 3.19 container) for CI build. https://github.com/rescript-lang/rescript-compiler/pull/6600
+
 # 11.1.0-rc.1
 
 #### :rocket: New Feature