PHPStan: Upgrade to 2.0 (#2654)

* Bumped PHPStan to 2.0

* Regenerated baseline

Author: mnocon

composer.json

@@ -15,8 +15,8 @@
         "ibexa/automated-translation": "4.6.x-dev",
         "ibexa/code-style": "^1.0",
         "friendsofphp/php-cs-fixer": "^3.30",
-        "phpstan/phpstan": "^1.10",
-        "phpstan/phpstan-symfony": "^1.3",
+        "phpstan/phpstan": "^2.0",
+        "phpstan/phpstan-symfony": "^2.0",
         "ibexa/doctrine-schema": "4.6.x-dev",
         "ibexa/search": "4.6.x-dev",
         "ibexa/content-forms": "4.6.x-dev",