chore: remove unused NPM auth token and flags

[jescalada]

Attempts to fix #1334.

[netlify]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.40%. Comparing base (ecd6161) to head (bfff0f7).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1351   +/-   ##
=======================================
  Coverage   80.40%   80.40%           
=======================================
  Files          65       65           
  Lines        4608     4608           
  Branches      776      776           
=======================================
  Hits         3705     3705           
  Misses        888      888           
  Partials       15       15           

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[jescalada]

Merging this to test/redo the rc.4 pre-release!