build(deps): bump docker/metadata-action

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7 to 879dcbb708d40f8b8679d4f7941b938a086e23a7.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](https://github.com/docker/metadata-action/compare/9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7...879dcbb708d40f8b8679d4f7941b938a086e23a7

)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-type: direct:production
...

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