ci: use actions/upload-pages-artifact v4

[antongolub]

• Tests pass
• Appropriate changes to README are included in PR

[Copilot]

Pull Request Overview

This PR updates the GitHub Actions workflow to use a newer version of the upload-pages-artifact action and makes several improvements to the CI/CD pipeline for better reliability and security.

• Upgrades actions/upload-pages-artifact from v3 to v4
• Improves shell safety by adding environment variables and quoting in the commitlint step
• Updates dependency installation to use more deterministic and secure approaches

Reviewed Changes

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

File	Description
.github/workflows/test.yml	Refactors commitlint command to use environment variables with proper quoting for improved shell safety
.github/workflows/docs.yml	Updates upload-pages-artifact to v4, changes npm install to npm ci, and updates rollup dependency version with --no-save flag

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