update changelog

Author: mununki

CHANGELOG.md

@@ -39,6 +39,7 @@ These are only breaking changes for unformatted code.
 - Fix issue where uncurried was not supported with pipe https://github.com/rescript-lang/rescript-compiler/pull/5803
 - Fix printing of nested types in uncurried mode https://github.com/rescript-lang/rescript-compiler/pull/5826
 - Fix issue in printing uncurried callbacks https://github.com/rescript-lang/rescript-compiler/pull/5828
+- Fix issue where optional field in the inlined record caused the type error https://github.com/rescript-lang/rescript-compiler/pull/5827
 
 #### :nail_care: Polish