feat: support node-sass v6.0.0

[alexander-akait]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

fixes #945 + update deps

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #947 (80ebda7) into master (00a46a7) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #947   +/-   ##
=======================================
  Coverage   96.23%   96.23%           
=======================================
  Files           4        4           
  Lines         239      239           
  Branches       75       75           
=======================================
  Hits          230      230           
  Misses          8        8           
  Partials        1        1           

Impacted Files	Coverage Δ
src/utils.js	95.43% <100.00%> (ø)

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