Revert "build: bump scss-bundle from 3.0.2 to 3.1.2 (#20799)" (#21007)
Revert "build: bump scss-bundle from 3.0.2 to 3.1.2 (#20799)" (#21007)

This reverts commit b2e2e864192ed5167733df23fb8a5c4406b86cf3.
This PR reverts the update to scss-bundle that causes a massive size regression in our sass bundle.
crisbeto/material2,mmalerba/material2,DevVersion/material2,josephperrott/material2,josephperrott/material2,mmalerba/material2,angular/components,mmalerba/material2,andrewseguin/material2,crisbeto/material2,angular/components,DevVersion/material2,josephperrott/material2,josephperrott/material2,josephperrott/material2,DevVersion/material2,DevVersion/material2,crisbeto/material2,andrewseguin/material2,crisbeto/material2,andrewseguin/material2,DevVersion/material2,angular/components,andrewseguin/material2,mmalerba/material2,angular/components,andrewseguin/material2,mmalerba/material2