Update dependency phpstan/phpstan to ^2.1.3

| datasource | package         | from  | to    |
| ---------- | --------------- | ----- | ----- |
| packagist  | phpstan/phpstan | 2.1.2 | 2.1.3 |

Author: renovate[bot]

composer.json

@@ -52,7 +52,7 @@
         "ext-pcov": "*",
         "ext-posix": "*",
         "doctrine/coding-standard": "^12.0.0",
-        "phpstan/phpstan": "^2.1.2",
+        "phpstan/phpstan": "^2.1.3",
         "phpstan/phpstan-deprecation-rules": "^2.0.1",
         "phpstan/phpstan-phpunit": "^2.0.4",
         "phpstan/phpstan-strict-rules": "^2.0.3",