feat: bump squizlabs/php_codesniffer to v4 (#171)

Author: simPod

composer.json

@@ -15,9 +15,9 @@
     },
     "require": {
         "php": "^8.3",
-        "doctrine/coding-standard": "^13.0.1",
-        "slevomat/coding-standard": "^8.21.1",
-        "squizlabs/php_codesniffer": "^3.13"
+        "doctrine/coding-standard": "^14",
+        "slevomat/coding-standard": "^8.23.0",
+        "squizlabs/php_codesniffer": "^4"
     },
     "require-dev": {
         "phpstan/extension-installer": "^1.2",

src/Cdn77/Sniffs/Ordering/AlphabeticallyOrderedConstantsSniff.php

@@ -83,6 +83,10 @@ public function process(File $phpcsFile, mixed $stackPtr): void
                 continue;
             }
 
+            if ($namesWithValues === []) {
+                continue;
+            }
+
             $firstNameWithValue = $namesWithValues[array_key_first($namesWithValues)];
             $fix = $phpcsFile->addFixableError(
                 sprintf('%s constant names are not alphabetically ordered.', ucfirst($visibility)),