Update outdated costs-for-github-models.md

[kenorb]

Code of Conduct

• I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

The following page: https://docs.github.com/en/billing/reference/costs-for-github-models
is outdated (including list of models), can you refresh pricing and list based on the current data?
Thanks.

What changes are you suggesting?

Refresh pricing and list based on the current data.

Additional information

No response

[welcome]

Thanks for opening this issue. A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[docs-bot]

This issue may have been opened accidentally. I'm going to close it now, but feel free to open a new issue with a more descriptive title!

[kenorb]

This issue may have been opened accidentally.

No, it's not.

[kenorb]

open a new issue with a more descriptive title

The title is clear.