[2.8] update composer dependencies

[vincentaubert]

Q	A
Bug fix?	yes
New feature?	no
BC breaks?	no
Deprecations?	no
Tests pass?	yes
Fixed tickets
License	MIT
Doc PR

[vincentaubert]

link to issue #806

[GrahamCampbell]

There's more than one fix in here. Shouldn't they be separated?

[vincentaubert]

The Symfony requirements file has been automatically updated by composer when I ran the composer update command. So I propose to add it.

[GrahamCampbell]

Ok. :)

[Tobion]

This needs to be redone as I merged 2.7 upwards. So the composer.json changed again.

[vincentaubert]

done

[Tobion]

Please squash the commits into one.

[vincentaubert]

done

[lyrixx]

@Tobion Why don't you merge PR with GH ? it eases work of contributor, and also the work of people who write blog post about new features.

[fabpot]

I missed that but indeed, all merge must be done with GH.

[Tobion]

I didn't know I can use GH for PRs on symfony-standard. Will do so from now on.
Does GH support different naming of the "origin" remote by now? Otherwise I have to rename my remotes there as well :(

[stof]

@Tobion you can use it for any repo.
And no, it only support origin (I was the only one interested in this feature at this time, and I changed my naming convention for remotes when changing computer, so I never completed the work on this). See the discussion on the GH repo.