Bump docker/setup-buildx-action from 1.6.0 to 1.7.0 (#23)

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 1.6.0 to 1.7.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v1.6.0...v1.7.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/cibuild.yml

@@ -29,7 +29,7 @@ jobs:
 
       - name: Set up Docker Buildx
         id: buildx
-        uses: docker/setup-buildx-action@v1.6.0
+        uses: docker/setup-buildx-action@v1.7.0
 
       - name: Login to container registry
         uses: docker/login-action@v1.10.0