Run Bazel test suite on Linux ARM64 platform

Add some test coverage for the FileArtifactValue changes made in https://github.com/bazelbuild/bazel/commit/50e228bcada3e10f5c7ada72e7da0a5fa780febe.

Failed in 1m 5s
:ubuntu: Ubuntu 20.04 LTS ARM64curl -sS https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/buildkite/bazelci.py?1738673126 -o bazelci.py && python3.8 bazelci.py runner --task=ubuntu2004_arm64 --http_config=https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/pipelines/bazel-linux-arm64.yml?1738673125
Waited 8s
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Ran in 19s
Total Job Run Time: 57s