Update docker/metadata-action action to v4.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
docker/metadata-action	action	minor	v4.5.0 -> v4.6.0

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Release Notes

docker/metadata-action

### [`v4.6.0`](https://togithub.com/docker/metadata-action/releases/tag/v4.6.0) [Compare Source](https://togithub.com/docker/metadata-action/compare/v4.5.0...v4.6.0) - Dedup and sort labels by [@​crazy-max](https://togithub.com/crazy-max) in [https://github.com/docker/metadata-action/pull/301](https://togithub.com/docker/metadata-action/pull/301) - Bump [@​docker/actions-toolkit](https://togithub.com/docker/actions-toolkit) from 0.3.0 to 0.5.0 in [https://github.com/docker/metadata-action/pull/302](https://togithub.com/docker/metadata-action/pull/302) **Full Changelog**: https://github.com/docker/metadata-action/compare/v4.5.0...v4.6.0

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Configuration

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