Bump docker/setup-buildx-action from 2.0.0 to 2.6.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2.0.0 to 2.6.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v2.0.0...v2.6.0)

---
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>

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
         uses: docker/setup-qemu-action@v2.0.0
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2.0.0
+        uses: docker/setup-buildx-action@v2.6.0
 
       - name: Login to DockerHub
         uses: docker/login-action@v2.0.0