docs: udpate changelog

Author: kazupon

CHANGELOG.md

@@ -12,6 +12,10 @@ This changelog is generated by [GitHub Releases](https://github.com/intlify/vue-
 
 <!-- Release notes generated using configuration in .github/release.yml at v11.1.9 -->
 
+### 🔒 Security Fixes
+
+- fix: DOM-based XSS via tag attributes for escape parameter, about details see https://github.com/intlify/vue-i18n/security/advisories/GHSA-x8qp-wqqm-57ph
+
 **Full Changelog**: https://github.com/intlify/vue-i18n/compare/v11.1.8...v11.1.9
 
 # v11.1.8 (2025-07-02T15:01:43Z)