`modules` is not created for git actions builds

[Dooruk]

and it would be nice to have it in the build folder

[Dooruk]

This following line is the culprit for this:

https://github.com/GEOS-ESM/swell/blob/96dd41c8a548b61e51334bda8477d3e481e964df/src/swell/utilities/build.py#L82