Update actions/upload-artifact action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/upload-artifact	action	major	v4 → v6

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Release Notes

actions/upload-artifact (actions/upload-artifact)

v6

Compare Source

v5

Compare Source

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Configuration

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.98%. Comparing base (0e53af2) to head (e1894c2).
⚠️ Report is 2 commits behind head on main.
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Additional details and impacted files

@@            Coverage Diff            @@
##               main     #161   +/-   ##
=========================================
  Coverage     93.98%   93.98%           
  Complexity      286      286           
=========================================
  Files            12       12           
  Lines           965      965           
  Branches        173      173           
=========================================
  Hits            907      907           
  Misses           47       47           
  Partials         11       11           

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