[no ci] [Doc] Update 5.13.0 changelog to mention RHF bump and impact on Jest config

Author: slax57

CHANGELOG.md

@@ -24,6 +24,18 @@
 * Bump vite from 6.3.6 to 6.4.1 ([#11026](https://github.com/marmelab/react-admin/pull/11026)) ([dependabot[bot]](https://github.com/apps/dependabot))
 * Bump astro from 5.13.7 to 5.14.3 ([#11025](https://github.com/marmelab/react-admin/pull/11025)) ([dependabot[bot]](https://github.com/apps/dependabot))
 
+### Additional Release Notes
+
+#### React-hook-form version bump
+
+This release bumps the minimum required version of `react-hook-form` to `7.65.0`.
+
+#### Jest configuration update
+
+This release changed the way react-admin exports its modules to be fully compatible with ESM (PR [#10995](https://github.com/marmelab/react-admin/pull/10995)). This may require you to update your Jest configuration if you are using Jest in CJS mode (the default).
+
+See https://marmelab.com/react-admin/UnitTesting.html#working-with-jest for more details.
+
 ## 5.12.3
 
 * Fix optimistic query invalidation and avoid invalidating the same query twice ([#11017](https://github.com/marmelab/react-admin/pull/11017)) ([slax57](https://github.com/slax57))