Update actions/checkout action to v2.4.2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	minor	v2.3.4 -> v2.4.2

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Release Notes

actions/checkout

### [`v2.4.2`](https://togithub.com/actions/checkout/releases/tag/v2.4.2) [Compare Source](https://togithub.com/actions/checkout/compare/v2.4.1...v2.4.2) ##### What's Changed - Add set-safe-directory input to allow customers to take control. ([#​770](https://togithub.com/actions/checkout/issues/770)) by [@​TingluoHuang](https://togithub.com/TingluoHuang) in [https://github.com/actions/checkout/pull/776](https://togithub.com/actions/checkout/pull/776) - Prepare changelog for v2.4.2. by [@​TingluoHuang](https://togithub.com/TingluoHuang) in [https://github.com/actions/checkout/pull/778](https://togithub.com/actions/checkout/pull/778) **Full Changelog**: https://github.com/actions/checkout/compare/v2...v2.4.2 ### [`v2.4.1`](https://togithub.com/actions/checkout/releases/tag/v2.4.1) [Compare Source](https://togithub.com/actions/checkout/compare/v2.4.0...v2.4.1) - Fixed an issue where checkout failed to run in container jobs due to the new git setting `safe.directory` ### [`v2.4.0`](https://togithub.com/actions/checkout/releases/tag/v2.4.0) [Compare Source](https://togithub.com/actions/checkout/compare/v2.3.5...v2.4.0) - Convert SSH URLs like `org-@​github.com:` to `https://github.com/` - [pr](https://togithub.com/actions/checkout/pull/621) ### [`v2.3.5`](https://togithub.com/actions/checkout/releases/tag/v2.3.5) [Compare Source](https://togithub.com/actions/checkout/compare/v2.3.4...v2.3.5) Update dependencies

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