Update phpstan/phpstan requirement from ^1.11.1 to ^1.11.4

Updates the requirements on [phpstan/phpstan](https://github.com/phpstan/phpstan) to permit the latest version.
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Changelog](https://github.com/phpstan/phpstan/blob/1.11.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@1.11.1...1.11.4)

---
updated-dependencies:
- dependency-name: phpstan/phpstan
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

composer.json

@@ -20,7 +20,7 @@
         "ilexn/keep-a-change-log": "^2.0.1",
         "infection/infection": "^0.27.11",
         "phpbench/phpbench": "^1.2.15",
-        "phpstan/phpstan": "^1.11.1",
+        "phpstan/phpstan": "^1.11.4",
         "phpstan/phpstan-phpunit": "^1.4.0",
         "phpstan/phpstan-strict-rules": "^1.6.0",
         "phpunit/phpunit": "^10.5.20",