Bump docker/setup-buildx-action from 1.5.0 to 1.6.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@v1.5.0...v1.6.0)

---
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>

Author: dependabot[bot]

.github/workflows/ci-cd.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1.5.0
+        uses: docker/setup-buildx-action@v1.6.0
 
       - name: Cache Docker layers
         uses: actions/cache@v2.1.6