Merge pull request #36 from zaherg/master

Support Laravel 9.0

Author: aflanagan

composer.json

@@ -14,7 +14,7 @@
   ],
   "require": {
     "php": ">=5.6",
-    "symfony/yaml": "^4.4|^5.2"
+    "symfony/yaml": "^4.4|^5.2|^6.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^6.0",