chore: Update karma dependencies

[mister-ben]

Description

Updates karma dependencies. This includes an update to karma-firebox-launcher via videojs-generate-karma-config, however tests won't run on Firefox without manual intervention as karma-detect-browsers would also need to be updated (with the correct fief executable name) and that doesn't seem likely.

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Change has been verified in an actual browser (Chrome, Firefox, IE)
  • Unit Tests updated or fixed
  • Docs/guides updated
  • Example created (starter template on JSBin)
• Reviewed by Two Core Contributors

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.76%. Comparing base (978731e) to head (60d9f1f).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8743      +/-   ##
==========================================
+ Coverage   83.15%   83.76%   +0.61%     
==========================================
  Files         120      120              
  Lines        7995     7995              
  Branches     1924     1924              
==========================================
+ Hits         6648     6697      +49     
+ Misses       1347     1298      -49     

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