ci: extend test matrix to 3.14, more arm runners

[davidhewitt]

More (new) platform coverage 👍

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.70%. Comparing base (bc3caf5) to head (1b99c59).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #98   +/-   ##
=======================================
  Coverage   83.70%   83.70%           
=======================================
  Files           3        3           
  Lines        1068     1068           
  Branches     1068     1068           
=======================================
  Hits          894      894           
  Misses        116      116           
  Partials       58       58           

☔ 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.