Bump docker/setup-buildx-action from 1 to 1.3.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 1 to 1.3.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v1...v1.3.0)

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

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
           submodules: true
 
       - uses: docker/setup-qemu-action@v1
-      - uses: docker/setup-buildx-action@v1
+      - uses: docker/setup-buildx-action@v1.3.0
       - uses: docker/login-action@v1
         with:
           password: ${{ secrets.DOCKER_PASSWORD }}