Update composer.json for Laravel 8

Author: nhamtphat

composer.json

@@ -14,14 +14,11 @@
         }
     ],
     "require": {
-        "php": "^7.1",
-        "phpviet/number-to-words": "^1.0",
-        "illuminate/support": "^5.7"
+        "phpviet/number-to-words": "^1.2",
+        "illuminate/support": "^8.39"
     },
     "require-dev": {
-        "orchestra/testbench": "^3.7",
-        "phpunit/phpunit": "~7.5",
-        "scrutinizer/ocular": "^1.5"
+        "orchestra/testbench": "^6.17"
     },
     "autoload": {
         "files": [