chore(ci): Add Node 22 to CI and fix dependabot PRs

[dpogue]

Description

• Add Node 22 to CI
• Don't run push events on Dependabot PRs because it can break things
• Add CodeQL scanning

[github-advanced-security]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.62%. Comparing base (d77f379) to head (9f321d2).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #282   +/-   ##
=======================================
  Coverage   83.62%   83.62%           
=======================================
  Files          14       14           
  Lines         519      519           
=======================================
  Hits          434      434           
  Misses         85       85           

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