fix: remove trailing comma from JSON

Author: sc85

composer.json

@@ -1,7 +1,7 @@
 {
     "name": "optimus/api-consumer",
     "require": {
-        "laravel/framework": "~6.0|~7.0|~8.0",
+        "laravel/framework": "~6.0|~7.0|~8.0"
     },
     "require-dev": {
         "phpunit/phpunit": "~8.0",