routes.json: add child team list route

[nickvanw]

Hello 👋!

I was looking do some work with the GitHub API with regards to child teams, and I noticed that this route (thus, the accompanying method) seemed to be missing!

It's present in the hellcat preview definition here, so it should work with just these changes.

This is my first contribution to this project, so I'm not sure what the culture is around testing and examples? Let me know if there's anything else that needs to be done to get this merge-ready 😄.

[gr2m]

Hello @nickvanw, thanks for the PR, it looks just right 👌

You can follow all important updates of node-github at #620. We are nearly done with the "maintainability" milestone, after which I plan to take an inventory, because there are other methods currently missing. But no reason to make you wait, I’ll merge it in as is, it will get released automatically in am oment

[gr2m]

released as v12.1.0

[nickvanw]

You can follow all important updates of node-github at #620. We are nearly done with the "maintainability" milestone, after which I plan to take an inventory, because there are other methods currently missing.

Fantastic! Thanks for pointing me over there, and thanks for not making me wait 😁!