Prepare 9.4.0 release

Signed-off-by: Mior Muhammad Zaki <[email protected]>

CHANGELOG-9.x.md

@@ -2,6 +2,27 @@
 
 This changelog references the relevant changes (bug and security fixes) done to `orchestra/testbench`.
 
+## 9.4.0
+
+Released: 2024-08-26
+
+### Changes
+
+* Update minimum support for Testbench Core v9.4.0+. ([v9.3.0...v9.4.0](https://github.com/orchestral/testbench-core/compare/v9.3.0...v9.4.0))
+
+#### Testbench Changes
+
+##### Added
+
+* Added `artisan` binary to Laravel skeleton.
+* Added `Orchestra\Testbench\join_paths()` function.
+* Added `Orchestra\Testbench\Attributes\UsesVendor` attribute class.
+* Added `defineStashRoutes()` method to register adhoc route for test.
+
+### Changes
+
+* Improvements to `Orchestra\Testbench\default_skeleton_path()`, `Orchestra\Testbench\package_path()`, and `Orchestra\Testbench\workbench_path()` usage based on new `Orchestra\Testbench\join_paths()` function.
+
 ## 9.3.0
 
 Released: 2024-08-14