Update dependency phpstan/phpstan to v2

| datasource | package         | from   | to    |
| ---------- | --------------- | ------ | ----- |
| packagist  | phpstan/phpstan | 1.12.7 | 2.0.0 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

composer.json

@@ -28,7 +28,7 @@
         "league/commonmark": "^2.4",
         "patchlevel/coding-standard": "^1.3.0",
         "phpspec/prophecy-phpunit": "^2.1.0",
-        "phpstan/phpstan": "^1.10.48",
+        "phpstan/phpstan": "^2.0.0",
         "phpunit/phpunit": "^10.5.2",
         "psalm/plugin-laravel": "^2.11",
         "roave/security-advisories": "dev-master",