Update actions/setup-python action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/setup-python	action	major	v5 → v6

---

Release Notes

actions/setup-python (actions/setup-python)

v6

Compare Source

---

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.

---

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

---

This PR was generated by Mend Renovate. View the repository job log.

[coderabbitai]

Important

Review skipped

Bot user detected.

To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.56%. Comparing base (c6dc8de) to head (c953fe8).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main      #47      +/-   ##
============================================
+ Coverage     77.28%   77.56%   +0.28%     
- Complexity      313      314       +1     
============================================
  Files            31       31              
  Lines          1061     1061              
  Branches        134      134              
============================================
+ Hits            820      823       +3     
+ Misses          163      161       -2     
+ Partials         78       77       -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.