chore: upgrade pnpm to 11.1.2

[chenjiahan]

Summary

This PR upgrades the repository package manager metadata to pnpm 11.1.2 and updates pnpm 11 install configuration where dependency build scripts need an explicit allowBuilds decision. Lockfile or small validation fixes are included only where pnpm 11/local checks required them.

Related Links

• https://github.com/pnpm/pnpm/releases/tag/v11.1.2
• https://github.com/pnpm/pnpm/releases/tag/v11.0.0

[chatgpt-codex-connector]

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[Copilot]

Pull request overview

This PR updates repository tooling metadata to use pnpm 11.1.2, and also bumps the Node.js version used in CI workflows.

Changes:

• Update packageManager metadata to pnpm@11.1.2.
• Bump GitHub Actions CI Node.js version from 20.19.0 to 22.20.0 for lint/test jobs.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
package.json	Bumps the packageManager field to pnpm 11.1.2.
.github/workflows/nodejs.yml	Updates CI matrices to run lint/tests on Node 22.20.0.

Comments suppressed due to low confidence (1)

.github/workflows/nodejs.yml:62

• package.json declares engines.node >= 20.19.0, but this test matrix now only runs on 22.20.0. Consider including 20.19.0 in the matrix as well so Windows/Linux coverage includes the minimum supported Node version.

    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest]
        node-version: [22.20.0]

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