Remove trailing comma

Author: n7studios

composer.json

@@ -22,7 +22,7 @@
   "require-dev": {
     "phpunit/phpunit": "^5.7 || ^9.0",
     "squizlabs/php_codesniffer": "^3.3",
-    "phpstan/phpstan": "^1.2",
+    "phpstan/phpstan": "^1.2"
   },
   "autoload": {
     "psr-4": {