replace node-sass with sass

[sgress454]

The current node-sass dependency in the front end is unmaintained:

and has caused some build issues. I've tested the suggested replacement and was able to build the frontend bundle as well as Storybook with no problems.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.59%. Comparing base (51fecdd) to head (56401df).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #25493   +/-   ##
=======================================
  Coverage   63.59%   63.59%           
=======================================
  Files        1619     1619           
  Lines      154976   154976           
  Branches     4038     3987   -51     
=======================================
  Hits        98559    98559           
  Misses      48649    48649           
  Partials     7768     7768           

Flag	Coverage Δ
frontend	53.21% <ø> (ø)

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