missing pagination in CustomersEndpoint getCustomers()

[gbsnj]

missing pagination signature and implementation in getCustomers() results in not getting all customers.

Function should look like:

public function getCustomers($page = 1, $pageSize = 50, \DateTime $minCreatedAt = null)
{
$query = [
'page' => max(1, $page),
'pageSize' => max(1, $pageSize),
];

if ($minCreatedAt !== null && $minCreatedAt instanceof \DateTime) {
    $query['minCreatedAt'] = $minCreatedAt->format('c');
}
return $this->client->get(
    'customers',
    $query,
    Response\GetCustomersResponse::class
);

}