feat(git-node): add git node security --prepare-local-branch

[aduh95]

I've used that to prepare the 22.22.2 proposal; being able to fetch and apply the patches locally without running the release preparation script is much better UX IMO, and it's nice to be able to do that without needing to change the local config or manually download vulnerabilities.json.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.56%. Comparing base (3a427ee) to head (692434b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1050   +/-   ##
=======================================
  Coverage   80.56%   80.56%           
=======================================
  Files          39       39           
  Lines        4846     4846           
=======================================
  Hits         3904     3904           
  Misses        942      942           

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