Update lint workflow to use ubuntu-latest

[jonathan343]

Summary

Full support for ubuntu-20.04 was dropped on . See actions/runner-images#11101 for more information.

This is resulting in the lint workflow failing with the following errors:

This is a scheduled Ubuntu 20.04 brownout. Ubuntu 20.04 LTS runner will be removed on 2025-04-01. For more details, see https://github.com/actions/runner-images/issues/11101

GitHub Actions has encountered an internal error when running your job.

This PR updates our lint workflow to use ubuntu-latest, similar to our other workflows.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.97%. Comparing base (6300f6b) to head (a53530a).
Report is 32 commits behind head on develop.

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Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3416      +/-   ##
===========================================
+ Coverage    92.94%   92.97%   +0.03%     
===========================================
  Files           66       67       +1     
  Lines        14956    15054      +98     
===========================================
+ Hits         13901    13997      +96     
- Misses        1055     1057       +2     

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