Add GitHub Actions - Githubissues

[x] Have you followed the guidelines for contributing?
[x] Have you checked that there aren't other open pull requests for the same formula update/change?
[x] Have you built your formula locally with brew install --build-from-source FORMULA, where FORMULA is the name of the formula you're submitting?
[x] Does your build pass brew audit --strict FORMULA (after doing brew install FORMULA)?

brewsci / homebrew-base