Publish docker image with for arm64 platform

[jack-berg]

While incorporating weaver into semantic-conventions-java, we discovered that the weaver docker image doesn't have multi platform support, so running it in arm64 requires this extra argument.

Apparently the otel/weaver image doesn't publish for arm64 platform yet.

        "--rm",
        "--platform=linux/x86_64",

Originally posted by @jack-berg in open-telemetry/semantic-conventions-java#70 (comment)

[jsuereth]

This looks to be not too hard using docker-provided actions: https://docs.docker.com/build/ci/github-actions/multi-platform/

[jsuereth]

So while I got a build working - It looks like we DON'T want to pay the rust compiler cost through QEMU emulation.

I'll lookinto updating the PR for this guidance: https://docs.docker.com/build/ci/github-actions/multi-platform/#distribute-build-across-multiple-runners