Update to v13 of symplify/easy-coding-standard

Author: bytehead

composer.json

@@ -13,15 +13,12 @@
         "php": "^8.1",
         "kubawerlos/php-cs-fixer-custom-fixers": "^3.14",
         "slevomat/coding-standard": "^8.0",
-        "symplify/easy-coding-standard": "^12.1"
+        "symplify/easy-coding-standard": "^13.0"
     },
     "require-dev": {
         "contao/rector": "^1.2",
         "phpunit/phpunit": "^11.5"
     },
-    "conflict": {
-        "squizlabs/php_codesniffer": ">=4.0.0"
-    },
     "autoload": {
         "psr-4": {
             "Contao\\EasyCodingStandard\\": "src/"