chore(deps): update actions/checkout action to v4

[tradeshift-renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v2 -> v4

---

Release Notes

actions/checkout (actions/checkout)

### [`v4`](https://togithub.com/actions/checkout/blob/HEAD/CHANGELOG.md#v410) [Compare Source](https://togithub.com/actions/checkout/compare/v3...v4) - [Add support for partial checkout filters](https://togithub.com/actions/checkout/pull/1396) ### [`v3`](https://togithub.com/actions/checkout/blob/HEAD/CHANGELOG.md#v360) [Compare Source](https://togithub.com/actions/checkout/compare/v2...v3) - [Fix: Mark test scripts with Bash'isms to be run via Bash](https://togithub.com/actions/checkout/pull/1377) - [Add option to fetch tags even if fetch-depth > 0](https://togithub.com/actions/checkout/pull/579)

---

Configuration

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

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

---

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