Update PHPStan packages to v2

| datasource | package                           | from    | to    |
| ---------- | --------------------------------- | ------- | ----- |
| packagist  | phpstan/phpstan                   | 1.12.12 | 2.0.3 |
| packagist  | phpstan/phpstan-deprecation-rules | 1.2.1   | 2.0.1 |
| 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

@@ -28,10 +28,10 @@
         "lcobucci/coding-standard": "^11.0",
         "phpbench/phpbench": "^1.2",
         "phpstan/extension-installer": "^1.2",
-        "phpstan/phpstan": "^1.10.7",
-        "phpstan/phpstan-deprecation-rules": "^1.1.3",
-        "phpstan/phpstan-phpunit": "^1.3.10",
-        "phpstan/phpstan-strict-rules": "^1.5.0",
+        "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": "^11.1"
     },
     "suggest": {