Apply fixes from StyleCI

Author: StyleCIBot

src/Illuminate/Validation/Rules/In.php

@@ -3,8 +3,8 @@
 namespace Illuminate\Validation\Rules;
 
 use BackedEnum;
-use Stringable;
 use Illuminate\Contracts\Support\Arrayable;
+use Stringable;
 use UnitEnum;
 
 class In implements Stringable

src/Illuminate/Validation/Rules/NotIn.php

@@ -3,8 +3,8 @@
 namespace Illuminate\Validation\Rules;
 
 use BackedEnum;
-use Stringable;
 use Illuminate\Contracts\Support\Arrayable;
+use Stringable;
 use UnitEnum;
 
 class NotIn implements Stringable