Update GitHub Pages deployment action to version 4

[tomtana]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the GitHub Pages deployment action from version 1 to version 4, modernizing the CI/CD workflow to use the latest available version of the deployment action.

• Updated actions/deploy-pages action from v1 to v4

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.77%. Comparing base (4d31dfd) to head (2714fc8).
⚠️ Report is 1 commits behind head on main.
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Additional details and impacted files

@@           Coverage Diff           @@
##             main      #14   +/-   ##
=======================================
  Coverage   95.77%   95.77%           
=======================================
  Files           6        6           
  Lines         379      379           
=======================================
  Hits          363      363           
  Misses         16       16           

Flag	Coverage Δ
unittests	95.77% <ø> (ø)

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