Prepare changelog for v1.8.8

Author: paulbalandan

CHANGELOG.md

@@ -4,6 +4,12 @@ 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).
 
+## [v1.8.8](https://github.com/CodeIgniter/coding-standard/compare/v1.8.7...v1.8.8) - 2025-09-27
+
+- Add but disable`phpdoc_tag_no_named_arguments`
+- Add `modifier_keywords` fixer
+- Add `@const` to `phpdoc_no_alias_tag`
+
 ## [v1.8.7](https://github.com/CodeIgniter/coding-standard/compare/v1.8.6...v1.8.7) - 2025-07-18
 
 - Enable `no_useless_printf` fixer