chore: Add git config to test (#4853)
chore: Add git config to test (#4853)

I use `useConfigOnly = true` so that I ensure I always commit with the
right email to each repo, the tests in this repo assume that global
config is set for name and email.

This is a simple fix that allows me and possibly others to run the test
suite
singapore/renovate,singapore/renovate,singapore/renovate