[TASK] Update squizlabs/php_codesniffer requirement

Updates the requirements on [squizlabs/php_codesniffer](https://github.com/PHPCSStandards/PHP_CodeSniffer) to permit the latest version.
- [Release notes](https://github.com/PHPCSStandards/PHP_CodeSniffer/releases)
- [Changelog](https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/CHANGELOG.md)
- [Commits](PHPCSStandards/PHP_CodeSniffer@3.9.0...3.9.1)

---
updated-dependencies:
- dependency-name: squizlabs/php_codesniffer
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

composer.json

@@ -28,7 +28,7 @@
         "phpunit/phpunit": "^10.5.16",
         "rector/rector": "^1.0.3",
         "spaze/phpstan-disallowed-calls": "^3.1",
-        "squizlabs/php_codesniffer": "^3.9.0"
+        "squizlabs/php_codesniffer": "^3.9.1"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,