chore(deps): update actions/setup-python action to v3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/setup-python	action	major	v2 -> v3

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Release Notes

actions/setup-python

### [`v3`](https://togithub.com/actions/setup-python/compare/v2...v3) [Compare Source](https://togithub.com/actions/setup-python/compare/v2...v3)

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Configuration

📅 Schedule: "after 8pm every weekday,every weekend" in timezone Asia/Singapore.

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

♻ Rebasing: Whenever PR is behind base branch, 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, click this checkbox.

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