Update CHANGELOG

Author: lam0819

CHANGELOG.md

@@ -5,9 +5,22 @@ All notable changes to `workflow-engine-core` 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).
 
+## v0.0.1-alpha - 2025-05-29
+
+### What's Changed
+
+* Bump phpstan/phpstan from 1.12.27 to 2.1.17 by @dependabot in https://github.com/solutionforest/workflow-engine-core/pull/1
+
+### New Contributors
+
+* @dependabot made their first contribution in https://github.com/solutionforest/workflow-engine-core/pull/1
+
+**Full Changelog**: https://github.com/solutionforest/workflow-engine-core/commits/v0.0.1-alpha
+
 ## [Unreleased]
 
 ### Added
+
 - Initial release of framework-agnostic workflow engine core
 - Workflow definition and execution engine
 - Support for custom actions with attributes (Retry, Timeout, Condition)
@@ -20,6 +33,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - GitHub Actions CI/CD pipeline
 
 ### Features
+
 - Framework-agnostic architecture
 - PHP 8.3+ type safety and modern features
 - Extensible plugin system
@@ -33,4 +47,5 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [1.0.0] - TBD
 
 ### Added
+
 - Initial stable release