docs: update changelog

Author: kazupon

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 This changelog is generated by [GitHub Releases](https://github.com/intlify/vue-i18n/releases/tag/v10.0.5)
 
+## What's Changed
+
+### 🐛 Bug Fixes
+
+- fix: XSS vulnerability with prototype pollution on AST
+- fix: prototype pollusion on deepCopy
+
 <!-- Release notes generated using configuration in .github/release.yml at v10.0.5 -->
 
 **Full Changelog**: https://github.com/intlify/vue-i18n/compare/v10.0.4...v10.0.5