feat(.github): run free-disk-space action on autoware-base workflow

[youtalk]

Description

• feat(docker): copy cleanup_system.sh to autoware-base images #5482

Unfortunately, it was found that multi-architecture builds using QEMU with Docker Buildx Bake caused disk exhaustion on GitHub runners. https://github.com/autowarefoundation/autoware/actions/runs/12005064895
Therefore, this PR runs free-disk-space action before building the images.

Tests performed

https://github.com/autowarefoundation/autoware/actions/runs/12022618607

Effects on system behavior

Not applicable.

Interface changes

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