Fix (or silence) Sass warnings

[bartaz]

Done

• silences all sass warnings from dependencies (Vanilla)
• silences all sass warnings related to import (they are not urgent and require quite significant changes, automatic migrator doesn't seem to work out of the box https://sass-lang.com/documentation/breaking-changes/import/)
• silences warnings in webpack build as well (also from react-components and store-components)
• updates relevant code around color and other built-in functions to use their latest versions

A follow-up was created to fix warnings upstream in store-components: WD-18313
A follow-up was created to potentially fix import warnings if time allows: WD-18312

How to QA

• Check the build logs on CI
• or pull the branch, run dotrun build
• there should be no warnings thrown by SCSS build

Testing

• This PR has tests
• No testing required (explain why): this is a build config change

Issue / Card

Fixes https://warthogs.atlassian.net/browse/WD-18305

[webteam-app]

Demo

Jenkins

demos.haus

[steverydz]

Good work! LGTM 👍