Add An Input To Set Docker Buildx version

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## Describe the Feature

Ability to provide a buildx version so when setting `provenance: false` it is not ignored.

## Expected Behavior

Expect a buildx version to be set so provenance: false is recognized and multiple format image is not pushed to ecr.

## Use Case

This Current version of build-push action pushes muilti platform multi-image/image index types to ecr. Due to AWS Lambda not supporting image index artifact type I need to turn off multi image. When I set `provenance: false` it is ignored because a buildx version is not provided and no default is set. buildx version states unknown



## Describe Ideal Solution

A clear and concise description of what you want to happen. If you don't know, that's okay.
Provide an input that sets the buildx version

## Alternatives Considered

Explain what alternative solutions or features you've considered.

I have added steps in the workflow that set buildx version before calling the build push action.


## Additional Context

Add any other context or screenshots about the feature request here.

Created an issue on docker build-push github repo: https://github.com/docker/build-push-action/issues/1035