Bump docker/setup-buildx-action from 2.2.1 to 3.6.1

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2.2.1 to 3.6.1.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@8c0edbc...988b5a0)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/release-build.yml

@@ -87,7 +87,7 @@ jobs:
           cosign-release: 'v1.9.0'
 
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@8c0edbc76e98fa90f69d9a2c020dcb50019dc325
+        uses: docker/setup-buildx-action@988b5a0280414f521da01fcc63a27aeeb4b104db
 
       - name: Login to GitHub Container Registry
         uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a