Update PHPStan version constraint to support 7.0

composer.json

@@ -31,7 +31,7 @@
         "dingo/api": "^2",
         "mockery/mockery": "^1.2.0",
         "league/fractal": "^0.17.0",
-        "phpstan/phpstan": "^0.11.15"
+        "phpstan/phpstan": "^0.9.0"
     },
     "suggest": {
         "league/fractal": "Required for transformers support",