Update dependency phpstan/phpstan to ^1.11.8

| datasource | package         | from   | to     |
| ---------- | --------------- | ------ | ------ |
| packagist  | phpstan/phpstan | 1.11.7 | 1.11.8 |

Author: renovate[bot]

composer.json

@@ -13,7 +13,7 @@
     "require": {
         "php": "~8.2.0 || ~8.3.0",
         "nikic/php-parser": "^4.19.1 || ^5.0.2",
-        "phpstan/phpstan": "^1.11.7"
+        "phpstan/phpstan": "^1.11.8"
     },
     "require-dev": {
         "nette/di": "^3.2.2",