feat(ci): test and publish on Node 24 LTS

[ihor-sokoliuk]

Summary

• test the declared Node 20 minimum and maintained Node 24 LTS in CI with independent matrix results
• run both tag-triggered publishing jobs on Node 24
• preserve the exact npm 11.17.0 trusted-publishing pin and the Node 20 package floor

Reimplements the useful maintained-runtime scope from #175 against current main; the contributor branch was not modified.

Testing

• Node 20.20.2 / npm 11.17.0: lint, build, 704/704 tests, 96.10% line and 92.00% branch coverage, 26/26 E2E, packed consumer
• Node 24.19.0 / npm 11.17.0: lint, build, 704/704 tests, 94.75% line and 91.98% branch coverage, 26/26 E2E, packed consumer
• exact workflow contract, diff check, conflict scan, and secret preflight

[Copilot]

Pull request overview

Updates GitHub Actions workflows to validate the project on both the declared minimum Node.js version (20) and the maintained LTS runtime (24), while ensuring publishing continues to run on Node 24 with the existing trusted-publishing npm pin preserved.

Changes:

• Add a CI matrix to run lint/build/tests on Node 20 and Node 24 (with independent results).
• Update both npm publishing jobs to run on Node 24.
• Adjust workflow commentary to keep the “exact npm pin” rationale accurate regardless of runner-bundled npm versions.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/ci.yml	Adds a Node 20/24 matrix (fail-fast disabled) and uses the matrix version in setup-node.
.github/workflows/npm-publish.yml	Switches publish jobs to Node 24 and updates trusted-publishing pin commentary to be runner-version-agnostic.

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[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

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