Use AccessTokenInterface as of league/oauth2-client 2.4.0

[holtkamp]

league/oauth2-client 2.4.0 introduced a AccessTokenInterface.

Not using it causes an error:

PHP Fatal error:  Declaration of Mollie\OAuth2\Client\Provider\Mollie::getResourceOwnerDetailsUrl(League\OAuth2\Client\Token\AccessToken $token) must be compatible with League\OAuth2\Client\Provider\AbstractProvider::getResourceOwnerDetailsUrl(League\OAuth2\Client\Token\AccessTokenInterface $token) in /project/vendor/mollie/oauth2-mollie-php/src/Provider/Mollie.php on line 10

Forced use of league/oauth2-client 2.3.1 resolves this problem, I think this should be set as the "maximum" version of league/oauth2-client that can be used with "this" version of mollie/oauth2-mollie-php

[holtkamp]

UPDATE
This was clearly a non-backward compatible change, also discussed here: thephpleague/oauth2-client#752

[willemstuursma]

Thanks for reporting anyway.

[ramsey]

Please check release 2.4.1 of league/oauth2-client and confirm that it fixes this issue. Thanks!

[holtkamp]

@ramsey thanks for the swift patch release, this indeed resolves the issue.