Feature suggestion: Log the x-github-request-id header in the action

[gm3dmo]

Would be nice if there was someway of logging the x-github-request-id header.

It would be helpful to have this in cases where the attempt to get a token from app/installations/<installation_id>/access_tokens fails with a "Network Error" where it fails to reach api.github.com for some reason versus any case when GitHub.com is responding with an error.