Update PHPStan packages to v2

| datasource | package                           | from    | to    |
| ---------- | --------------------------------- | ------- | ----- |
| packagist  | phpstan/phpstan                   | 1.10.34 | 2.0.0 |
| packagist  | phpstan/phpstan-deprecation-rules | 1.1.4   | 2.0.0 |
| packagist  | phpstan/phpstan-phpunit           | 1.3.14  | 2.0.0 |
| packagist  | phpstan/phpstan-strict-rules      | 1.5.1   | 2.0.0 |

Author: renovate[bot]

composer.json

@@ -26,10 +26,10 @@
         "lcobucci/coding-standard": "^11.0",
         "lcobucci/error-handling-middleware": "^1.4",
         "phpstan/extension-installer": "^1.2",
-        "phpstan/phpstan": "^1.8",
-        "phpstan/phpstan-deprecation-rules": "^1.0",
-        "phpstan/phpstan-phpunit": "^1.1",
-        "phpstan/phpstan-strict-rules": "^1.4",
+        "phpstan/phpstan": "^2.0",
+        "phpstan/phpstan-deprecation-rules": "^2.0",
+        "phpstan/phpstan-phpunit": "^2.0",
+        "phpstan/phpstan-strict-rules": "^2.0",
         "phpunit/phpunit": "^10.0.16"
     },
     "conflict": {