Update phpstan/phpstan requirement from ^2.1.10 to ^2.1.11 (#181)

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/2.1.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@2.1.10...2.1.11)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

composer.json

@@ -17,7 +17,7 @@
   },
   "require-dev": {
     "doctrine/coding-standard": "^13.0",
-    "phpstan/phpstan": "^2.1.10",
+    "phpstan/phpstan": "^2.1.11",
     "phpunit/phpunit": "^12.0.10"
   },
   "autoload": {