ci(deps): update danysk/action-checkout action to v0.2.21

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
danysk/action-checkout	action	patch	0.2.20 -> 0.2.21

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Release Notes

danysk/action-checkout (danysk/action-checkout)

### [`v0.2.21`](https://redirect.github.com/DanySK/action-checkout/releases/tag/0.2.21) [Compare Source](https://redirect.github.com/danysk/action-checkout/compare/0.2.20...0.2.21) ##### Bug Fixes - **deps:** update actions/checkout action to v4.2.1 ([908aba5](https://redirect.github.com/DanySK/action-checkout/commit/908aba524c5f2a2321192fc1c713545e90905d2e))

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Configuration

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🚦 Automerge: Enabled.

♻ 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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