[skip ci] Add PHP 8.4 to nightly matrix

Author: iluuu1994

.github/nightly_matrix.php

@@ -1,7 +1,8 @@
 <?php
 
 const BRANCHES = [
-    ['name' => 'master', 'ref' => 'master', 'version' => ['major' => 8, 'minor' => 4]],
+    ['name' => 'master', 'ref' => 'master', 'version' => ['major' => 8, 'minor' => 5]],
+    ['name' => 'PHP-8.4', 'ref' => 'PHP-8.4', 'version' => ['major' => 8, 'minor' => 4]],
     ['name' => 'PHP-8.3', 'ref' => 'PHP-8.3', 'version' => ['major' => 8, 'minor' => 3]],
     ['name' => 'PHP-8.2', 'ref' => 'PHP-8.2', 'version' => ['major' => 8, 'minor' => 2]],
     ['name' => 'PHP-8.1', 'ref' => 'PHP-8.1', 'version' => ['major' => 8, 'minor' => 1]],