chore: update pnpm/action-setup action to v4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
pnpm/action-setup	action	major	v2.4.1 -> v4.0.0

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Release Notes

pnpm/action-setup (pnpm/action-setup)

### [`v4.0.0`](https://redirect.github.com/pnpm/action-setup/releases/tag/v4.0.0) [Compare Source](https://redirect.github.com/pnpm/action-setup/compare/v3.0.0...v4.0.0) An error is thrown if one version of pnpm is specified in the `packageManager` field of `package.json` and a different version is specified in the action's settings [#​122](https://redirect.github.com/pnpm/action-setup/pull/122) ### [`v3.0.0`](https://redirect.github.com/pnpm/action-setup/releases/tag/v3.0.0) [Compare Source](https://redirect.github.com/pnpm/action-setup/compare/v2.4.1...v3.0.0) The action is updated to run on Node.js v20

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Configuration

📅 Schedule: Branch creation - "every weekday" in timezone Europe/Warsaw, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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