Fix code coverage upload

[andreibancioiu]

Fix upload of code coverage metrics to https://app.codecov.io/gh/multiversx/mx-chain-go.

[github-actions]

📊 MultiversX Automated Test Report: View Report

🔄 Build Details:

• mx-chain-go Commit Hash: f0141c2bff17d028d26790bacec28cca22d949af
• Current Branch: code-coverage-06-05
• mx-chain-go Target Branch: master
• mx-chain-simulator-go Target Branch: main
• mx-chain-testing-suite Target Branch: main

🚀 Environment Variables:

• TIMESTAMP: 05062025-105903
• PYTEST_EXIT_CODE: 0
  🎉 MultiversX CI/CD Workflow Complete!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.19%. Comparing base (d2b858d) to head (f0141c2).
Report is 2124 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7029      +/-   ##
==========================================
- Coverage   78.72%   77.19%   -1.53%     
==========================================
  Files         755      779      +24     
  Lines       99607   128779   +29172     
==========================================
+ Hits        78414    99413   +20999     
- Misses      15910    23773    +7863     
- Partials     5283     5593     +310     

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