chore(deps): update docker/build-push-action action to v6

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
docker/build-push-action	action	major	v4 -> v6

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Release Notes

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

### [`v6`](https://togithub.com/docker/build-push-action/compare/v5...v6) [Compare Source](https://togithub.com/docker/build-push-action/compare/v5...v6) ### [`v5`](https://togithub.com/docker/build-push-action/compare/v4...v5) [Compare Source](https://togithub.com/docker/build-push-action/compare/v4...v5)

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Configuration

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