[Composer] Bumped PHPStan to ^2.0

Author: alongosz

composer.json

@@ -47,10 +47,10 @@
         "ibexa/search": "~5.0.x-dev",
         "ibexa/test-core": "~5.0.x-dev",
         "ibexa/user": "~5.0.x-dev",
-        "phpunit/phpunit": "^9.5",
-        "phpstan/phpstan": "^1.12",
-        "phpstan/phpstan-phpunit": "^1.4",
-        "phpstan/phpstan-symfony": "^1.4"
+        "phpstan/phpstan": "^2.0",
+        "phpstan/phpstan-phpunit": "^2.0",
+        "phpstan/phpstan-symfony": "^2.0",
+        "phpunit/phpunit": "^9.5"
     },
     "scripts": {
         "fix-cs": "php-cs-fixer fix --config=.php-cs-fixer.php -v --show-progress=dots",