Update pulumi/actions action to v5

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
pulumi/actions	action	major	v4 -> v5

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Release Notes

pulumi/actions (pulumi/actions)

### [`v5`](https://togithub.com/pulumi/actions/compare/v4...v5) [Compare Source](https://togithub.com/pulumi/actions/compare/v4...v5)

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Configuration

📅 Schedule: Branch creation - "every weekend" in timezone Europe/Brussels, 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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