docs: add v1.4.0 changelog entry

Author: amdad121

CHANGELOG.md

@@ -2,6 +2,16 @@
 
 All notable changes to `guard-laravel` will be documented in this file.
 
+## v1.4.0 - 2026-03-20
+
+### ✨ New Features
+
+- **Laravel 13 Support**: Added support for Laravel 13
+- Updated `illuminate/contracts`, `illuminate/database`, and `illuminate/support` to `^13.0`
+- Updated `orchestra/testbench` to `^11.0` for testing
+
+---
+
 ## v1.2.1 - 2026-02-03
 
 ### ✨ New Features