Update CHANGELOG.md

- Updating to mention potential breaking change

Author: heath-freenome

CHANGELOG.md

@@ -21,6 +21,7 @@ should change the heading of the (upcoming) version to include a major version b
 ## @rjsf/core 
 
 - Fix XSS when rendering schema validation errors [#4254](https://github.com/rjsf-team/react-jsonschema-form/issues/2718)
+  - NOTE: This will have potential consequences if you are using the [translateString](https://rjsf-team.github.io/react-jsonschema-form/docs/api-reference/form-props/#translatestring) feature and are trying to render HTML. Switching to [Markdown](https://www.markdownguide.org/) will solve your problems.
 
 ## @rjsf/utils