normalize composer.json

[samsonasik]

Tools used: https://github.com/localheinz/composer-normalize

Checklist:

• Securely signed commits

[jim-parry]

I wouldn't worry too much about this - composer.json will be changing with the repo reorg.
That would be a better time to jump in :)

[jim-parry]

Going along with this. It makes sense on its own :)