chore: code refactor via rector

tests/Feature/ApplicationTest.php

@@ -3,14 +3,15 @@
 namespace Tests\Feature;
 
 // Simple test to check if Laravel application is working
+use Illuminate\Foundation\Application;
 use Tests\TestCase;
 
 class ApplicationTest extends TestCase
 {
     /** @test */
-    public function it_checks_if_application_is_running()
+    public function it_checks_if_application_is_running(): void
     {
-        $this->assertInstanceOf(\Illuminate\Foundation\Application::class, $this->app);
+        $this->assertInstanceOf(Application::class, $this->app);
         $this->assertEquals('ZEmailnator', config('app.name'));
     }
 }