[TASK] Update PHPStan packages to v2

| datasource | package                      | from    | to    |
| ---------- | ---------------------------- | ------- | ----- |
| packagist  | phpstan/phpstan              | 1.12.12 | 2.0.3 |
| packagist  | phpstan/phpstan-phpunit      | 1.4.1   | 2.0.1 |
| packagist  | phpstan/phpstan-strict-rules | 1.6.1   | 2.0.0 |
| packagist  | phpstan/phpstan-symfony      | 1.4.12  | 2.0.0 |

composer.json

@@ -24,10 +24,10 @@
 		"ergebnis/composer-normalize": "^2.30",
 		"friendsofphp/php-cs-fixer": "^3.57",
 		"phpstan/extension-installer": "^1.2",
-		"phpstan/phpstan": "^1.10",
-		"phpstan/phpstan-phpunit": "^1.3",
-		"phpstan/phpstan-strict-rules": "^1.5",
-		"phpstan/phpstan-symfony": "^1.2",
+		"phpstan/phpstan": "^2.0",
+		"phpstan/phpstan-phpunit": "^2.0",
+		"phpstan/phpstan-strict-rules": "^2.0",
+		"phpstan/phpstan-symfony": "^2.0",
 		"phpunit/phpunit": "^10.1 || ^11.0",
 		"rector/rector": "^1.0.0"
 	},