Lower the minimum phpcs version to 3.3.1

Author: micheh

composer.json

@@ -22,7 +22,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^8.0 || ^9.0",
-        "squizlabs/php_codesniffer": "^3.5",
+        "squizlabs/php_codesniffer": "^3.3.1",
         "vimeo/psalm": "^3.12"
     },
     "autoload": {