docs: update pnpm/action-setup to v5

[MikeMcC399]

• closes Update pnpm/action-setup to node24 version #1569

Situation

Documentation and examples (prior to PR #1686) used pnpm/action-setup@v4 which runs.using node20.

The node20 option for GitHub Actions is tied to Node.js 20 that is planned for End-of-life on Apr 30, 2026.

GitHub has deprecated the use of node20 and will force runners to use node24 beginning on Jun 2, 2026 (re-scheduled from Mar 4, 2026) - see Deprecation of Node 20 on GitHub Actions runners.

pnpm/action-setup@v5 was released on Mar 17, 2026 to update the action to use node24.

Change

Update the reference of pnpm/action-setup@v4 in the README document to the node24 version, pnpm/action-setup@v5.

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Note

Low Risk
Low risk documentation-only change; updates a workflow snippet to use a newer GitHub Action version without affecting runtime code.

Overview
Updates the README’s pnpm GitHub Actions example to use pnpm/action-setup@v5 instead of @v4, aligning the documented setup step with the newer action runtime.

^{Written by Cursor Bugbot for commit 75e80ab. This will update automatically on new commits. Configure here.}

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