* Update sass-loader@16.0.2
* Update sass part 1 (actually update it)
* Update scss files to remove at-charset and use at-use instead of at-import
at-charset hasn't been needed since we switched to dart-sass, and
at-import is now deprecated. Most of this was done using sass-migrator.
We still use at-import for files imported from node_modules, but sass
doesn't seem to complain about that
* Inline at-extend rule that was causing an error
* Remove or inline at-use rules in components package
* Update make_emojis.mjs and remove unused field
* Remove skin tone translations from emojis.ts
* Remove category name translations from emojis.ts
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Co-authored-by: Mattermost Build <build@mattermost.com>