Allow all PHPCS 4.0 versions

Author: kukulich

composer.json

@@ -16,7 +16,7 @@
 		"php": "^7.4 || ^8.0",
 		"dealerdirect/phpcodesniffer-composer-installer": "^0.6.2 || ^0.7 || ^1.1.2",
 		"phpstan/phpdoc-parser": "^2.3.0",
-		"squizlabs/php_codesniffer": "4.0.0"
+		"squizlabs/php_codesniffer": "^4.0.0"
 	},
 	"require-dev": {
 		"phing/phing": "3.0.1|3.1.0",