Bump docker/setup-buildx-action from 2.2.1 to 2.6.0 (#1274)

Bump docker/setup-buildx-action from 2.2.1 to 2.6.0 (#1274)

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2.2.1 to 2.6.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v2.2.1...v2.6.0)

---
updated-dependencies:
- dependency-name: docker/setup-buildx-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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