Git commit doesn't work
### How did it happen?
1. Made some changes
2. Ran commit (via Sketch Runner)

Running `git commit` manually from the command line works fine


### Error log

```
e.exports.lstatSync is not a function. (In 'e.exports.lstatSync(t)', 'e.exports.lstatSync' is undefined)

{
	"line": 1,
	"column": 29135,
	"sourceURL": "/Users/norberg/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/__commands_Commit.js"
}

/Users/norberg/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/__commands_Commit.js:1:29135
/Users/norberg/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/__commands_Commit.js:1:5357
/Users/norberg/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/__commands_Commit.js:1:34545
forEach@[native code]
b@/Users/norberg/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/__commands_Commit.js:1:34459
/Users/norberg/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/__commands_Commit.js:1:35878
/Users/norberg/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/__commands_Commit.js:1:35370
/Users/norberg/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/__commands_Commit.js:1:35403
__skpm_run@/Users/norberg/Library/Application Support/com.bohemiancoding.sketch3/Plugins/Git.sketchplugin/Contents/Sketch/__commands_Commit.js:1:36216
__skpm_run@[native code]
```