Update dependency phpstan/phpstan to v2

Author: renovate[bot]

composer.json

@@ -25,7 +25,7 @@
         "nette/schema": "^1.2"
     },
     "require-dev": {
-        "phpstan/phpstan": "^1.8.2",
+        "phpstan/phpstan": "^1.8.2 || ^2.0.0",
         "phpunit/phpunit": "^9.5.5 || ^10.0.0 || ^11.0.0",
         "scrutinizer/ocular": "^1.8.1",
         "unleashedtech/php-coding-standard": "^3.1",