Prepare changelog for v1.8.7

Author: paulbalandan

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this library will be documented in this file.
 
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v1.8.7](https://github.com/CodeIgniter/coding-standard/compare/v1.8.6...v1.8.7) - 2025-07-18
+
+- Enable `no_useless_printf` fixer
+
 ## [v1.8.6](https://github.com/CodeIgniter/coding-standard/compare/v1.8.5...v1.8.6) - 2025-07-05
 
 - Bump to php-cs-fixer v3.76