composer(deps-dev): Bump phpstan/phpstan from 1.11.5 to 1.11.6

Bumps [phpstan/phpstan](https://github.com/phpstan/phpstan) from 1.11.5 to 1.11.6.
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Changelog](https://github.com/phpstan/phpstan/blob/1.11.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@1.11.5...1.11.6)

---
updated-dependencies:
- dependency-name: phpstan/phpstan
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

composer.json

@@ -29,7 +29,7 @@
     "fakerphp/faker": "^1.23.1",
     "infection/infection": "~0.27.11",
     "phpstan/extension-installer": "^1.4.1",
-    "phpstan/phpstan": "^1.11.5",
+    "phpstan/phpstan": "^1.11.6",
     "phpstan/phpstan-deprecation-rules": "^1.2.0",
     "phpstan/phpstan-phpunit": "^1.4.0",
     "phpstan/phpstan-strict-rules": "^1.6.0",