build(deps): bump actions/{download,upload}-artifact to v4

[joelanford]

Description of the change:

Motivation for the change:

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Docs updated or added to /docs
• Commit messages sensible and descriptive

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9446132) 53.79% compared to head (3ba2935) 53.77%.
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1193      +/-   ##
==========================================
- Coverage   53.79%   53.77%   -0.02%     
==========================================
  Files         108      108              
  Lines       10367    10367              
==========================================
- Hits         5577     5575       -2     
- Misses       3808     3811       +3     
+ Partials      982      981       -1     

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: grokspawn, joelanford

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[grokspawn]

/lgtm