[llvm] [CI] Make email check workflow fail when author's email is private in Github UI (PR #148694)

[Udit Kumar Agarwal via llvm-commits]

uditagarwal97 wrote:

> 
> This might explain why I've seen a number of noreply addresses slip through.

Orthogonal to this PR, why don't we cause the workflow to fail when user's email is private? That way, the gatekeepers will be aware of the use of private emails? IMO, just adding a comment is not sufficient and it might get missed by the gatekeepers/reviewers say, when the PR received many comments.


https://github.com/llvm/llvm-project/pull/148694