Update actions/upload-artifact action to v7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/upload-artifact	action	major	v5 → v7

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Release Notes

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

v7

Compare Source

v6

Compare Source

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.69%. Comparing base (cfb3c03) to head (2c5b031).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #87   +/-   ##
=======================================
  Coverage   98.69%   98.69%           
=======================================
  Files          56       56           
  Lines        3608     3608           
=======================================
  Hits         3561     3561           
  Misses         47       47           

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[christianhelle]

Rachael: This update is valid. However, note that PR #88 also includes this change. If #88 is merged first, this might become redundant, but the change itself is correct.