[Bazel CI] Error in executing the CI skipped tasks.

[sgowroji]

CI: https://buildkite.com/bazel/bazel-at-head-plus-downstream/builds/4327#0193b3e7-5180-4719-ac75-2bba629a8a16

Platform: Ubuntu

Logs:

error: macOS, workspace on :darwin: macOS): Bazel 9 doesn\'t support workspace\n- rules_python (ignore_root_user_error: Windows, workspace on :windows: Windows): Bazel 9 doesn\'t support workspace\n- rules_python (compile_pip_requirements_test_from_external_repo: Ubuntu, workspace, minimum Bazel on :ubuntu: Ubuntu 20.04 LTS): Bazel 6 required\n- rules_python (compile_pip_requirements_test_from_external_repo: Ubuntu, bzlmod, minimum Bazel on :ubuntu: Ubuntu 20.04 LTS): Bazel 6 required\' --append --context \'ctx-skipped_downstream_tasks\'' 
error: "(" unexpected
Error: The command exited with status 2�[0m
error: running "plugin docker command" shell hook: The plugin docker command hook exited with status 2

CC Greenteam @meteorcloudy