Update actions/setup-python action to v5

[renovate[bot]]

This PR contains the following updates:

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

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Release Notes

actions/setup-python (actions/setup-python)

### [`v5`](https://redirect.github.com/actions/setup-python/compare/v4...v5) [Compare Source](https://redirect.github.com/actions/setup-python/compare/v4...v5)

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Configuration

📅 Schedule: Branch creation - "on monday" (UTC), Automerge - At any time (no schedule defined).

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

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

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