chore(main): release 6.3.0

[nodejs-github-bot]

🤖 I have created a release beep boop

6.3.0 (2026-03-23)

Features

• ncu-ci: add --check-for-duplicates flag (#1035) (5a789fd)

---

This PR was generated with Release Please. See documentation.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.90%. Comparing base (5a789fd) to head (1179b90).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1049   +/-   ##
=======================================
  Coverage   80.90%   80.90%           
=======================================
  Files          39       39           
  Lines        4859     4859           
=======================================
  Hits         3931     3931           
  Misses        928      928           

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