Update squizlabs/php_codesniffer requirement in the composer group (#928)

Updates the requirements on [squizlabs/php_codesniffer](https://github.com/PHPCSStandards/PHP_CodeSniffer) to permit the latest version.

Updates `squizlabs/php_codesniffer` to 4.0.0
- [Release notes](https://github.com/PHPCSStandards/PHP_CodeSniffer/releases)
- [Changelog](https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/4.x/CHANGELOG-4.x.md)
- [Commits](PHPCSStandards/PHP_CodeSniffer@3.13.2...4.0.0)

---
updated-dependencies:
- dependency-name: squizlabs/php_codesniffer
  dependency-version: 4.0.0
  dependency-type: direct:development
  dependency-group: composer
...

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

Author: dependabot[bot]

composer.json

@@ -12,7 +12,7 @@
     "php": "^8.1",
     "phpunit/phpunit": "^10.5 | ^11.5",
     "slevomat/coding-standard": "^8.19.1",
-    "squizlabs/php_codesniffer": "^3.13.2"
+    "squizlabs/php_codesniffer": "^4.0.0"
   },
   "scripts": {
     "post-install-cmd": [