move resource-generator to dev dependencies + update composer

composer.json

@@ -13,8 +13,7 @@
         "laravel/helpers": "^1.2",
         "laravel/tinker": "~1.0",
         "mongodb/mongodb": "1.3.*",
-        "php-ai/php-ml": "^0.9.0",
-        "tdebatty/laravel-resource-generator": "^6.1"
+        "php-ai/php-ml": "^0.9.0"
     },
     "require-dev": {
         "barryvdh/laravel-ide-helper": "^2.5",
@@ -24,7 +23,8 @@
         "nunomaduro/larastan": "^0.6.1",
         "phpunit/phpunit": "~7.0",
         "slevomat/coding-standard": "^5.0",
-        "squizlabs/php_codesniffer": "^3.4"
+        "squizlabs/php_codesniffer": "^3.4",
+        "tdebatty/laravel-resource-generator": "^6.2"
     },
     "autoload": {
         "classmap": [