Bump docker/setup-buildx-action from 2 to 3 (#115)

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2 to 3.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@v2...v3)

---
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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build-docker.yml

@@ -48,7 +48,7 @@ jobs:
           platforms: arm/v6,arm,arm64,amd64,ppc64le,s390x,386
         if: ${{ steps.update.outputs.needs-updating == 'true' }}
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
         if: ${{ steps.update.outputs.needs-updating == 'true' }}
       - name: DockerHub Login
         uses: docker/login-action@v2