fix: bump publish workflow to Node 24 for npm trusted publishing

Node 22 ships with npm 10.x, which supports --provenance (OIDC
attestation) but not OIDC-based publish authentication, so the
registry rejected the PUT with a 404. Trusted Publishing needs
npm >= 11.5.1; Node 24 (LTS) ships with npm 11.x natively.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: nikosd23

.github/workflows/npm-publish.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
-          node-version: 22
+          node-version: 24
           registry-url: https://registry.npmjs.org/
       - run: npm ci
       - run: npm run build