ci(docker-build-and-push.yaml): add max-parallelism option to restrict docker build make parallelism

[youtalk]

Description

• ci(docker-build-and-push.yaml): run update-docker-manifest job after docker-build-and-push job #6079
• ci(action.yaml): add utility-image to buildkit-cache-dance action to resolve docker.io rate limit #6072

Communication disruptions like the following with GitHub runners frequently occur.

docker-build-and-push-cuda (amd64)
The self-hosted runner lost communication with the server. Verify the machine is running and has a healthy network connection. Anything in your workflow that terminates the runner process, starves it for CPU/Memory, or blocks its network access can cause this error.

So this PR limits the maximum number of parallel executions for docker build bake to 2, which is half the number of CPU cores. This will slightly increase execution time, but is expected to alleviate CPU and memory exhaustion.
https://docs.docker.com/build/ci/github-actions/configure-builder/#max-parallelism

How was this PR tested?

https://github.com/autowarefoundation/autoware/actions/runs/14675233667

Notes for reviewers

None.

Effects on system behavior

None.

[github-actions]

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