"!.jenkins/" in the ".eslintignore" makes jscodeshift ignore all files

Our `.eslintignore`:

```
...
!.jenkins/
...
```

According to ESLint docs:

> Lines preceded by `!` are negated patterns that re-include a pattern that was ignored by an earlier pattern

https://eslint.org/docs/user-guide/configuring.html#configuring-rules

But in the jscodeshift case when supplied as `--ignore-config .eslintignore` it makes jscodeshift ignore all files.