FIX: github actions cache issue

[martins0n]

Before submitting (must do checklist)

• Did you read the contribution guide?
• Did you update the docs? We use Numpy format for all the methods and classes.
• Did you write any new necessary tests?
• Did you update the CHANGELOG?

Proposed Changes

Closing issues

[github-actions]

🚀 Deployed on https://deploy-preview-778--etna-docs.netlify.app

[codecov-commenter]

Codecov Report

Merging #778 (8dca729) into master (0b00cbc) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #778   +/-   ##
=======================================
  Coverage   83.74%   83.74%           
=======================================
  Files         123      123           
  Lines        6870     6870           
=======================================
  Hits         5753     5753           
  Misses       1117     1117           

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