Bump squizlabs/php_codesniffer to 4.0 in composer dependencies. Update composer.lock accordingly.

Author: mirko-pagliai

composer.json

@@ -21,7 +21,7 @@
     "cakedc/cakephp-phpstan": "^4.0",
     "cakephp/migrations": "^4.0",
     "phpunit/phpunit": "^10.5.31 || ^11.2.7 || ^12.1",
-    "squizlabs/php_codesniffer": "4.0.0RC1",
+    "squizlabs/php_codesniffer": "^4.0",
     "symfony/finder": "^6.0|^7.2",
     "mockery/mockery": "^1.6.10"
   },