Fix Laravel 5.6 compat issues

Author: mpociot

composer.json

@@ -12,7 +12,7 @@
     "require": {
         "php": ">=7.1.3",
         "botman/driver-web": "~1.0",
-        "botman/studio-addons": "~1.0",
+        "botman/studio-addons": "~1.2.1",
         "clue/stdio-react": "^1.0",
         "laravel/framework": "5.6.*",
         "laravel/tinker": "~1.0",
@@ -50,13 +50,11 @@
         ],
         "post-install-cmd": [
             "Illuminate\\Foundation\\ComposerScripts::postInstall",
-            "BotMan\\Studio\\Providers\\DriverServiceProvider::publishDriverConfigurations",
-            "php artisan optimize"
+            "BotMan\\Studio\\Providers\\DriverServiceProvider::publishDriverConfigurations"
         ],
         "post-update-cmd": [
             "Illuminate\\Foundation\\ComposerScripts::postUpdate",
-            "BotMan\\Studio\\Providers\\DriverServiceProvider::publishDriverConfigurations",
-            "php artisan optimize"
+            "BotMan\\Studio\\Providers\\DriverServiceProvider::publishDriverConfigurations"
         ],
         "post-autoload-dump": [
             "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",