fix(git-node): security release preparation should not use staging

[aduh95]

I had a hard time understanding why my local changes weren't taken into consideration, turns out it was using v26.x-staging commits despite enforcing that I was on v26.x

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.22%. Comparing base (d9fff73) to head (5dc43ef).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1096   +/-   ##
=======================================
  Coverage   65.22%   65.22%           
=======================================
  Files          45       45           
  Lines        6916     6916           
=======================================
  Hits         4511     4511           
  Misses       2405     2405           

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