Update docker/build-push-action action to v4.2.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
docker/build-push-action	action	patch	v4.2.0 -> v4.2.1

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Release Notes

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

v4.2.1

Compare Source

Note

Buildx v0.10 enables support for a minimal SLSA Provenance attestation, which requires support for OCI-compliant multi-platform images. This may introduce issues with registry and runtime support (e.g. Google Cloud Run and AWS Lambda). You can optionally disable the default provenance attestation functionality using provenance: false.

• warn if docker config can't be parsed by @​crazy-max in https://github.com/docker/build-push-action/pull/957

Full Changelog: docker/build-push-action@v4.2.0...v4.2.1

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Configuration

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

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