Describe the bug
I have setup GitHub Actions for Windows, Linux and Mac OS. Both of them use the https://github.com/arduino/actions, and are working fine, except for the Mac OS machine, which keeps complaining: https://github.com/evandroforks/anki/runs/526371357?check_suite_focus=true

 Set up protoc0s
##[error]API rate limit exceeded for 199.7.166.17. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.)
Run Arduino/actions/setup-protoc@master
  with:
    version: 3.x
    include-pre-releases: false
  env:
    pythonLocation: /Users/runner/hostedtoolcache/Python/3.7.6/x64
##[error]API rate limit exceeded for 199.7.166.17. (But here's the good news: Authenticated requests get a higher rate limit. Check out the documentation for more details.)

Area for Triage:

Question, Bug, or Feature?:
"Bug"

Virtual environments affected

• macOS 10.15
• Ubuntu 16.04 LTS
• Ubuntu 18.04 LTS
• Windows Server 2016 R2
• Windows Server 2019

Expected behavior
GitHub Actions hosted by GitHub itself, should not be complaning about API rate limits, as it is GitHub own server/machine which is originating the GitHub Request for another GitHub Service (GitHub Actions).

Actual behavior
API rate limit exceeded.
https://github.com/evandroforks/anki/runs/526371357?check_suite_focus=true