[BD-46] fix pathing in the CLI for replacing usage of SCSS variables

[viktorrusakov]

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[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (4d8d89a) 91.95% compared to head (706ce2e) 91.95%.

Additional details and impacted files

@@           Coverage Diff           @@
##            alpha    #2638   +/-   ##
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  Coverage   91.95%   91.95%           
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  Files         216      216           
  Lines        3618     3618           
  Branches      891      891           
=======================================
  Hits         3327     3327           
  Misses        286      286           
  Partials        5        5           

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[edx-semantic-release]

🎉 This PR is included in version 22.0.0-alpha.5 🎉

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[openedx-semantic-release-bot]

🎉 This PR is included in version 23.0.0-alpha.1 🎉

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