docs(changelog): defer to CI for changelog generation

Author: oniice

CHANGELOG.md

@@ -4,28 +4,6 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
-
-### Changed
-- Upgrade minimum PHP version to ^8.5
-- Modernise codebase with Rector (strict types, type declarations, early returns)
-- Update PHPUnit to ^13.0
-- Update Symfony packages to ^7.2|^8.0
-- Replace PHP_CodeSniffer with Laravel Pint
-- Add PHPStan static analysis at level 8
-- Update phpunit.xml schema to PHPUnit 13.0
-- Standardise CI workflows (tests, codecov, security audit, dependabot)
-- Update license year to 2026
-
-### Added
-- PHP version badge in README
-- Requirements section in README
-- Security audit workflow
-- Dependabot configuration
-
-### Removed
-- squizlabs/php_codesniffer dependency
-
 ## [2.1.0](https://github.com/myerscode/utilities-files/releases/tag/2.1.0) - 2023-10-10
 
 - [`f8ac495`](https://github.com/myerscode/utilities-files/commit/f8ac495b410e40b62bcceb3f95bd0583e94c7f5f) chore: updated test scripts to enable/disable coverage