Refine core usage in CI

[IAlibay]

Checklist

• Added a news entry

Developers certificate of origin

• I certify that this contribution is covered by the MIT License here and the Developer Certificate of Origin at https://developercertificate.org/.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.42%. Comparing base (2712c70) to head (d4cac3b).
Report is 69 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #924      +/-   ##
==========================================
- Coverage   94.23%   92.42%   -1.82%     
==========================================
  Files         134      134              
  Lines        9774     9774              
==========================================
- Hits         9211     9034     -177     
- Misses        563      740     +177     

Flag	Coverage Δ
fast-tests	92.42% <ø> (?)
slow-tests	?

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