[Infra] Replace codecov/test-results-action

[martincostello]

Changes

Replace codecov/test-results-action with codecov/codecov-action as the former is now deprecated.

Merge requirement checklist

• CONTRIBUTING guidelines followed (license requirements, nullable enabled, static analysis, etc.)
• Unit tests added/updated
• Appropriate CHANGELOG.md files updated for non-trivial changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.70%. Comparing base (6ef3729) to head (74b1f30).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6775   +/-   ##
=======================================
  Coverage   86.69%   86.70%           
=======================================
  Files         262      262           
  Lines       12319    12319           
=======================================
+ Hits        10680    10681    +1     
+ Misses       1639     1638    -1     

Flag	Coverage Δ
unittests-Project-Experimental	86.57% <ø> (-0.13%)	⬇️
unittests-Project-Stable	86.66% <ø> (+0.04%)	⬆️
unittests-Solution	86.65% <ø> (+0.02%)	⬆️
unittests-UnstableCoreLibraries-Experimental	86.07% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.
see 1 file with indirect coverage changes

[Copilot]

Pull request overview

This PR migrates from the deprecated codecov/test-results-action to codecov/codecov-action v5.5.2 for uploading test results to Codecov.

Key Changes:

• Updated action reference from codecov/[email protected] to codecov/[email protected]
• Added report_type: test_results parameter to specify the upload type for test results

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.