[payum] update the bundle composer.json

[makasim]

while trying to fix Sylius/Sylius-Standard#22 I discovered that sylius payum bundle has outdated requirements. This PR is a blocker for Sylius/Sylius-Standard#22 issue.

[makasim]

@pjedrzejewski ping

[Richtermeister]

Also currently blocked by this 😓

[kayue]

@Richtermeister In my case adding --dev to composer help, maybe you should try it too.

[makasim]

In my case adding --dev to composer help, maybe you should try it too.

hm, it must not help

[stloyd]

@kayue If you need to add --dev, then you are using quite old Composer version, as in "latest" it was changed, and require-dev are added automatically when calling install or update.

@makasim This is partial fix I would say, mostly because in Sylius-Standard there are still old references: https://github.com/Sylius/Sylius-Standard/blob/master/composer.json#L40-L43

[makasim]

@stloyd I cannot updated composer.lock of sylius-standard. because sylius payum bundle on packagist still requires 0.6. That's why I wrote it blocked me. Thanks for merging!