build(deps): bump docker/setup-buildx-action from 1.7.0 to 2.0.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 1.7.0 to 2.0.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@v1.7.0...v2.0.0)

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

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

.github/workflows/container-image.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - uses: docker/setup-qemu-action@v1.2.0
-    - uses: docker/setup-buildx-action@v1.7.0
+    - uses: docker/setup-buildx-action@v2.0.0
     # > By default, this action uses the Git context so you don't need to use
     # > the actions/checkout action to checkout the repository because this
     # > will be done directly by buildkit. [...]