fix(ci): avoid rate limits on GitHub API by supplying auth token

[thomaseizinger]

Description

This follows the recommendation in the Usage section of the action: https://github.com/arduino/setup-protoc#usage
We won't need it once #3024 is landed but the failing CIs are annoying enough to warrant a temporary fix.

Example of a failing CI run: https://github.com/libp2p/rust-libp2p/actions/runs/3630150537/jobs/6123169342

Notes

Links to any relevant issues

Open Questions

Change checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• A changelog entry has been made in the appropriate crates

[mxinden]

🙏

[mxinden]

Testground failure is due to a rename:

failed to load composition file: failed to process composition template: open ping/_compositions/go-rust-interop-latest.toml: no such file or directory

libp2p/test-plans#70

See #2647 (comment) for libp2p-relay and libp2p-dcutr failures.

[mxinden]

Not sure how successful this was. #3191 is now rate limited with an API key.

[thomaseizinger]

Not sure how successful this was. #3191 is now rate limited with an API key.

Wow, so we replaced one error with another haha