Update codecov/codecov-action action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
codecov/codecov-action	action	major	v5 → v6

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Release Notes

codecov/codecov-action (codecov/codecov-action)

v6

Compare Source

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Configuration

📅 Schedule: Branch creation - "after 8am on saturday" in timezone Australia/Brisbane, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• If you want to rebase/retry this PR, check this box

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[sentry]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.63%. Comparing base (41fca54) to head (28677ec).

Additional details and impacted files

@@            Coverage Diff            @@
##               main      #75   +/-   ##
=========================================
  Coverage     77.63%   77.63%           
  Complexity      365      365           
=========================================
  Files            37       37           
  Lines          1252     1252           
  Branches        153      153           
=========================================
  Hits            972      972           
  Misses          196      196           
  Partials         84       84           

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