feat: update wikimedia/less.php from 4.x to 5.x

Author: Krinkle

composer.json

@@ -165,7 +165,7 @@
         "symfony/postmark-mailer": "^7.0",
         "symfony/translation": "^7.0",
         "symfony/yaml": "^7.0",
-        "wikimedia/less.php": "^4.1"
+        "wikimedia/less.php": "^5.3"
     },
     "require-dev": {
         "mockery/mockery": "^1.5",

framework/core/composer.json

@@ -91,7 +91,7 @@
         "symfony/translation-contracts": "^2.5",
         "symfony/yaml": "^7.0",
         "flarum/json-api-server": "^0.1.0",
-        "wikimedia/less.php": "^4.1"
+        "wikimedia/less.php": "^5.3"
     },
     "require-dev": {
         "flarum/testing": "^2.0",