feat: add ability to provide GitHub.com token to setup-bun to avoid rate limits

[peloyeje]

Summary

Pass github_dotcom_token input (or fallback github.token) to the setup-bun action, which prevents 403 rate limit errors when fetching Bun release tags from GitHub API on shared runners

Follow-up of #861

Problem

The setup-bun action fetches Bun release tags from the GitHub API. Without an authenticated token, it hits rate limits (403 error) when running from shared GitHub Actions runners:

Error: API rate limit exceeded for <IP>. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.)

[ashwin-ant]

An alternative here might be to just pass a path to pass path_to_bun_executable instead. That way you can install Bun however you like. That might be cleaner than adding another input that's only used for one thing.

https://github.com/anthropics/claude-code-action/blob/main/action.yml#L120C3-L123

[peloyeje]

An alternative here might be to just pass a path to pass path_to_bun_executable instead. That way you can install Bun however you like. That might be cleaner than adding another input that's only used for one thing.

main/action.yml#L120C3-L123

Sounds reasonable indeed!
Just opened #913 to supersede this one

[peloyeje]

Replaced by #913