Update github-actions (archiso) (major)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v4 → v6
docker/build-push-action	action	major	v5 → v7
docker/login-action	action	major	v3 → v4
docker/setup-buildx-action	action	major	v3 → v4

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Release Notes

actions/checkout (actions/checkout)

v6

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v5

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docker/build-push-action (docker/build-push-action)

v7

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v6

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docker/login-action (docker/login-action)

v4

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docker/setup-buildx-action (docker/setup-buildx-action)

v4

Compare Source

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