Switch GitHub Actions to npm trusted publisher auth

[foreverest]

Summary

• Fixes Migrate to new npm tokens #12
• Update the GitHub Actions publish workflow to follow Step 2 of the npm trusted publisher instructions, replacing the deprecated npm access token flow with the new trusted publisher mechanism and secrets.
• Ensure the workflow now authenticates via the configured trusted publisher credentials before publishing releases.

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (e5fd693) to head (9ebe382).
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Additional details and impacted files

@@            Coverage Diff            @@
##              main       #17   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines          190       190           
  Branches        39        37    -2     
=========================================
  Hits           190       190           

Flag	Coverage Δ
node16.x	100.00% <ø> (?)
node17.x	100.00% <ø> (ø)
node18.x	100.00% <ø> (?)
node19.x	100.00% <ø> (?)
node20.x	100.00% <ø> (?)
node21.x	100.00% <ø> (?)

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