fix(laravel): use lowercase asc/desc for Eloquent orderBy

Laravel's Builder::orderBy() type-hints 'asc'|'desc'|SortDirection, not
'ASC'|'DESC'.

Author: soyuka

src/Laravel/Eloquent/Filter/OrderFilter.php

@@ -45,8 +45,8 @@ public function apply(Builder $builder, mixed $values, Parameter $parameter, arr
             return $builder;
         }
 
-        $direction = strtoupper($values);
-        if (!\in_array($direction, ['ASC', 'DESC'], true)) {
+        $direction = strtolower($values);
+        if (!\in_array($direction, ['asc', 'desc'], true)) {
             return $builder;
         }