[10.x] Allow to pass Arrayable or Stringble in rules In and NotIn

[michaelnabil230]

This PR adds the ability to Allow to pass Arrayable or Stringble in rules In and NotIn

request()->validate([
    'name' => ['required', 'string', 'min:6', In(collect(['Taylor', 'Michael', 'Tim']))],
    'password' => ['required', 'string', NotIn(collect(['12345', 'password']))],
]);

[taylorotwell]

Why a string? Can you revert that?

[michaelnabil230]

Hi @taylorotwell,

I added a string for if any developer can use this way

new In('1', '2', '3', '4');