* sort by `layer` inside `variants` layer
We currently have a whole system for sorting the utilties / components
already. Right now we also have a "variants" layer, this is to ensure
that we always have variants at the end of the file regardless of the
`parentLayer` (base, utilties, components).
That said, we also have to make sure that within this `variants` layer
we also sort by the `parentLayer`.
* update changelog
* ensure order is correct now