* fix: use latest ghcommit and fix cwd for git-cli
- `cwd` was not working correctly when commitMode was set to `git-cli`,
as it was attempting to resolve the `cwd` twice.
(This problem only occured when specifying a relative path for `cwd`.)
- Update `ghcommit`, and avoid calling `process.chdir()` to change the
working directory. Instead, we now pass the `cwd` option everywhere.
fixes#475
* simplify
* Apply suggestions from code review
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Co-authored-by: Mateusz Burzyński <mateuszburzynski@gmail.com>
