Update GH actions

[norkans7]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.79%. Comparing base (41b473a) to head (7bac52e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #121   +/-   ##
=======================================
  Coverage   99.79%   99.79%           
=======================================
  Files           9        9           
  Lines        1443     1443           
=======================================
  Hits         1440     1440           
  Misses          3        3           

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[Copilot]

Pull request overview

Updates the GitHub Actions used by the CI workflow to newer major versions, keeping the repository’s automation dependencies current.

Changes:

• Bump actions/checkout from v5 to v6 in both test and release jobs.
• Bump actions/setup-python from v5 to v6 in both test and release jobs.

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