* feat: Build multi-architecture Docker images
Updates the GitHub Actions workflow to build Docker images for both amd64 and arm64 architectures.
This is achieved by:
- Adding a QEMU setup step (`docker/setup-qemu-action@v3`).
- Adding a Docker Buildx setup step.
- Specifying `linux/amd64,linux/arm64` in the `platforms` input of the `docker/build-push-action@v6` step.
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Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
Robert Dyer