Update PHPStan packages to v2

| datasource | package                           | from    | to    |
| ---------- | --------------------------------- | ------- | ----- |
| packagist  | phpstan/phpstan                   | 1.12.11 | 2.0.2 |
| packagist  | phpstan/phpstan-deprecation-rules | 1.2.1   | 2.0.0 |
| packagist  | phpstan/phpstan-phpunit           | 1.4.1   | 2.0.1 |
| packagist  | phpstan/phpstan-strict-rules      | 1.6.1   | 2.0.0 |

Author: renovate[bot]

composer.json

@@ -25,10 +25,10 @@
         "league/plates": "^3.5.0",
         "middlewares/negotiation": "^2.1",
         "phpstan/extension-installer": "^1.4.1",
-        "phpstan/phpstan": "^1.12.4",
-        "phpstan/phpstan-deprecation-rules": "^1.2.1",
-        "phpstan/phpstan-phpunit": "^1.4.0",
-        "phpstan/phpstan-strict-rules": "^1.6.1",
+        "phpstan/phpstan": "^2.0.0",
+        "phpstan/phpstan-deprecation-rules": "^2.0.0",
+        "phpstan/phpstan-phpunit": "^2.0.0",
+        "phpstan/phpstan-strict-rules": "^2.0.0",
         "phpunit/phpunit": "^11.3",
         "twig/twig": "^3.14.1"
     },