fix CI problems incl. arm64-related ones (--break-system-packages option for pip; codecov secret; Python 3.12 compatible CI reqs)

[slayoo]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.02%. Comparing base (f0cd393) to head (0b56fb9).
Report is 1 commits behind head on main.

❗ Current head 0b56fb9 differs from pull request most recent head e1bf562. Consider uploading reports for the commit e1bf562 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #424   +/-   ##
=======================================
  Coverage   92.02%   92.02%           
=======================================
  Files          30       30           
  Lines        1468     1468           
=======================================
  Hits         1351     1351           
  Misses        117      117           

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