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

[renovate[bot]]

This PR contains the following updates:

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

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Release Notes

actions/checkout (actions/checkout)

### [`v4`](https://togithub.com/actions/checkout/blob/HEAD/CHANGELOG.md#v417) [Compare Source](https://togithub.com/actions/checkout/compare/v3...v4) - Bump the minor-npm-dependencies group across 1 directory with 4 updates by [@​dependabot](https://togithub.com/dependabot) in [https://github.com/actions/checkout/pull/1739](https://togithub.com/actions/checkout/pull/1739) - Bump actions/checkout from 3 to 4 by [@​dependabot](https://togithub.com/dependabot) in [https://github.com/actions/checkout/pull/1697](https://togithub.com/actions/checkout/pull/1697) - Check out other refs/\* by commit by [@​orhantoy](https://togithub.com/orhantoy) in [https://github.com/actions/checkout/pull/1774](https://togithub.com/actions/checkout/pull/1774) - Pin actions/checkout's own workflows to a known, good, stable version. by [@​jww3](https://togithub.com/jww3) in [https://github.com/actions/checkout/pull/1776](https://togithub.com/actions/checkout/pull/1776) ### [`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)

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