Fix support for symfony 5.1

[FilipBenco]

Current version 6.0.1 does not support symfony 5.1.

This commit should fix it

[Korbeil]

Thanks for your contribution !
Could you please add a conflict with 5.1.0 ?

[Korbeil]

More exactly framework-bundle 5.1.0

[FilipBenco]

Ofc, and what is the problem with framework bundle 5.1?

[Korbeil]

Ofc, and what is the problem with framework bundle 5.1?

Sorry on my phone, there is issue with serializer & 5.1.0. See symfony/symfony#37058 for related fix

[FilipBenco]

Np, I added conflict with that bundle version 5.1.0.
(Could you then please also bump the version of jane, so we can use it in our sf 5.1 projects? :) )

[Korbeil]

This composer file should also conflict framework-bundle 5.1.0

[FilipBenco]

my bad, I'll add it to every package, that requires sf serializer

[Korbeil]

Np, I added conflict with that bundle version 5.1.0.
(Could you then please also bump the version of jane, so we can use it in our sf 5.1 projects? :) )

I'll make a new tag later, not at home atm but you will have it today

[Korbeil]

Also, could you target 6.0.x branch please ?

[FilipBenco]

I had to create another PR for that. Feel free to close this one or merge, as you wish. Here is the 6.0.x one: #335

[Korbeil]

Closing this PR since #335 as been merged, thanks again for your contribution !