[tagpr] update CHANGELOG.md

Author: github-actions[bot]

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Changelog
 
+## [v0.16.6](https://github.com/2manymws/rcutil/compare/v0.16.5...v0.16.6) - 2025-11-06
+
 ## [v0.16.5](https://github.com/2manymws/rcutil/compare/v0.16.4...v0.16.5) - 2025-11-06
 ### Other Changes
 - chore: update lint/ci setting by @k1LoW in https://github.com/2manymws/rcutil/pull/80