[Python] Use namespace in path

Failed in 3m 24s
:mac: macOScurl -sS https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/buildkite/bazelci.py?1720709770 -o bazelci.py && python3 bazelci.py runner --task=macos
Waited 8s
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Ran in 3m 8s
Total Job Run Time: 5m 51s