Update GitHub Actions (major)

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
docker/build-push-action	action	major	v4 -> v5
docker/setup-buildx-action	action	major	v2 -> v3

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Release Notes

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

### [`v5`](https://togithub.com/docker/build-push-action/compare/v4...v5) [Compare Source](https://togithub.com/docker/build-push-action/compare/v4...v5)

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

### [`v3`](https://togithub.com/docker/setup-buildx-action/compare/v2...v3) [Compare Source](https://togithub.com/docker/setup-buildx-action/compare/v2...v3)

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

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• [ ] If you want to rebase/retry this PR, check this box

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