chore: update GitHub Actions to Node 24

[jonathannorris]

Summary

• Update GitHub Actions and custom action dependencies to Node 24-compatible releases.
• Update nested dependencies in composite and custom actions.
• Retain actions without an available Node 24 release.

[Copilot]

Pull request overview

This PR updates GitHub Actions workflow dependencies (first- and third-party actions) to versions intended to be compatible with the GitHub-hosted runner transition to Node 24.

Changes:

• Updated actions/checkout and actions/setup-node major versions in CI and release workflows.
• Updated amannn/action-semantic-pull-request to v6.
• Updated JS-DevTools/npm-publish to v4 in the release workflow.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
.github/workflows/test.yml	Bumps core Actions used by CI; currently still tests only Node 18/20.
.github/workflows/semantic-pr.yml	Updates semantic PR title enforcement action to v6.
.github/workflows/release.yml	Updates checkout/setup-node and npm publish action; release runtime still pinned to Node 18.

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