(Undocumented, thanks Microsoft.)
workflow_run: {
artifacts_url: 'https://api.github.com/repos/...',
cancel_url: 'https://api.github.com/repos/...',
check_suite_id: 123456789,
check_suite_node_id: 'NODEIDACDEFGHUIADASD',
check_suite_url: 'https://api.github.com/repos/...',
conclusion: 'success',
created_at: '2021-06-07T18:44:28Z',
event: 'workflow_dispatch',
head_branch: 'main',
head_commit: [Object],
head_repository: [Object],
head_sha: 'SHAACBADSADAASDASD',
html_url: 'https://github.com/....',
id: 123456789,
jobs_url: 'https://api.github.com/repos/...',
logs_url: 'https://api.github.com/repos/...',
name: 'workflow-that-completed',
node_id: 'NODEIDACDEFGHUIADASD',
pull_requests: [],
repository: [Object],
rerun_url: 'https://api.github.com/repos/...',
run_number: 14,
status: 'completed',
updated_at: '2021-06-07T18:47:28Z',
url: 'https://api.github.com/repos/...',
workflow_id: 0987654321,
workflow_url: 'https://api.github.com/repos/...'
}