Min requirement is PHPStan 2.0 (#125)

Author: staabm

composer.json

@@ -17,13 +17,13 @@
         "composer-runtime-api": "^2",
         "composer/semver": "^3.4",
         "nikolaposa/version": "^4.1",
-        "phpstan/phpstan": "^1.10 || ^2.0"
+        "phpstan/phpstan": "^2.0"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.64",
         "nikic/php-parser": "^4.0",
         "phpstan/extension-installer": "^1.4",
-        "phpstan/phpstan-deprecation-rules": "^1.2",
+        "phpstan/phpstan-deprecation-rules": "^2",
         "phpunit/phpunit": "^9 || ^10.5",
         "redaxo/php-cs-fixer-config": "^1.0"
     },