Change composer post-autoload-dump script to Artisan command (#6647)

* Change composer post-autoload-dump script to optimize:clear

* Changing to config:clear and clear-compiled

composer.json

@@ -33,7 +33,8 @@
     },
     "scripts": {
         "post-autoload-dump": [
-            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
+            "@php artisan config:clear",
+            "@php artisan clear-compiled",
             "@php artisan package:discover --ansi"
         ],
         "post-update-cmd": [