Apply suggestions from code review

Co-authored-by: Jérôme Tamarelle <jerome@tamarelle.net>

Author: Treggats

src/Eloquent/Builder.php

@@ -234,12 +234,12 @@ protected function ensureOrderForCursorPagination($shouldReverse = false)
 
         if ($shouldReverse) {
             $this->query->orders = collect($this->query->orders)
-                ->map(fn (int $direction) => $direction === 1 ? -1 : 1)
+                ->map(static fn (int $direction) => $direction === 1 ? -1 : 1)
                 ->toArray();
         }
 
         return collect($this->query->orders)
-            ->map(fn ($direction, $column) => [
+            ->map(static fn ($direction, $column) => [
                 'column' => $column,
                 'direction' => $direction === 1 ? 'asc' : 'desc',
             ])->values();