build(deps): bump docker/setup-buildx-action from 2.5.0 to 2.6.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](4b4e9c3e2d...6a58db7e0d)

---
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/release.yaml

@@ -28,7 +28,7 @@ jobs:
         uses: docker/setup-qemu-action@e81a89b1732b9c48d79cd809d8d81d79c4647a18 # v2.1.0
       - name: Setup Docker Buildx
         id: buildx
-        uses: docker/setup-buildx-action@4b4e9c3e2d4531116a6f8ba8e71fc6e2cb6e6c8c  # v2.5.0
+        uses: docker/setup-buildx-action@6a58db7e0d21ca03e6c44877909e80e45217eed2  # v2.6.0
       - name: Setup Syft
         uses: anchore/sbom-action/download-syft@4d571ad1038a9cc29d676154ef265ab8f9027042 # v0.14.2
       - name: Setup Cosign