Fix memory leak when using Laravel factories inside Codeception (#4971)

Author: AdrianSkierniewski

src/Codeception/Module/Laravel5.php

@@ -217,6 +217,10 @@ public function _after(\Codeception\TestInterface $test)
                     $connection->disconnect();
                 }
             }
+
+            // Remove references to Faker in factories to prevent memory leak
+            unset($this->app[\Faker\Generator::class]);
+            unset($this->app[\Illuminate\Database\Eloquent\Factory::class]);
         }
     }