Feature/composer version check

[akosglue]

Q	A
Bug fix?	yes/no
New feature?	yes/no
Fixed tickets	#...

[akosglue]

I opened this PR accidentally here instead of my fork before it is ready. However it will target #417
With this change it will be possible to disable the 'version' field check via the config (of course only with composer 2):
'config' => [ ComposerMustBeValid::class => [ 'composerVersionCheck' => false ] ],

[50bhan]

@akosglue Thank you for your work! Just as a comment here, could you please change your PR and limit it to the necessary changes for this PR? Because I can see this PR is mixed up with another two PRs.

[akosglue]

@50bhan if you look at 'Files changed' now, you seen only those 4 files that are related to this PR.
(2 fixtures, 1 test, 1 domain class)
Is it what you mean?
(the rest of the automatic checks will follow)

[50bhan]

@akosglue Yes, this is exactly what I meant! Thanks.

[akosglue]

@50bhan would you be so kind as to look at these 2 failing checks? how is this related? I don't see it directly.

[50bhan]

@akosglue Of course! I believe these failures are related to some dependency issues (as we have some problematic dependencies right now). So, I think I've fixed them already and made a PR for it (#477). We can merge that one first and then you can rebase and the CI failures might be fixed!

[50bhan]

@akosglue The #478 PR has been merged and the problem with the CI failure does not exist anymore. You can rebase now and the tests will pass.

[akosglue]

@50bhan indeed, it worked.

[Jibbarth]

It's a great improvement 🎉

Thank you @akosglue 👍