Update actions/checkout action to v4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v3 -> v4

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Release Notes

actions/checkout (actions/checkout)

v4

Compare Source

• Support fetching without the --progress option
• Update to node20

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Configuration

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[coveralls]

coverage: 90.084%. remained the same when pulling 43b6b573ee9c69de89f0eb2d50696b725a381791 on renovate/actions-checkout-4.x into 2bb3aa16c03634dba3ca5777c1736f6216c85ee1 on master.