update changeset

Author: baseballyama

.changeset/good-carrots-notice.md

@@ -2,4 +2,4 @@
 'eslint-plugin-svelte': patch
 ---
 
-fix(prefer-const): allow ESLint core rule's properties
+fix(prefer-const): Use `additionalProperties` instead of `ignoreReadonly` to match the ESLint core rule option name.