Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 3.3.0 to 4.0.1.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Upgrade guide](https://github.com/docker/metadata-action/blob/master/UPGRADE.md)
- [Commits](
		
	
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| .. | ||
| docker.yml | ||
| lint.yml | ||
| stack-healthcheck.yml | ||