update changelog

Author: Conduitry

CHANGELOG.md

@@ -11,6 +11,7 @@
 * Relax `a11y-no-noninteractive-element-to-interactive-role` warning ([#8402](https://github.com/sveltejs/svelte/pull/8402))
 * Properly handle microdata attributes ([#8413](https://github.com/sveltejs/svelte/issues/8413))
 * Prevent name collision when using computed destructuring variables ([#8417](https://github.com/sveltejs/svelte/issues/8417))
+* Fix escaping `<textarea value={...}>` values in SSR ([#8429](https://github.com/sveltejs/svelte/issues/8429))
 
 ## 3.57.0