`request-ci` fails without error when CI is locked down

[targos]

See #39725 (comment)

The request-ci label was removed but the request-ci-failed label was not added.

I don't know what the Jenkins API responds in this case, but it doesn't seem like we handle it.

Workflow run: https://github.com/nodejs/node/runs/3296324085?check_suite_focus=true

[targos]

@nodejs/actions

[richardlau]

We should handle the error but during a CI lockdown I think it's expected that request-ci would not start CI's.

[targos]

during a CI lockdown I think it's expected that request-ci would not start CI's

agreed

[richardlau]

I'm fairly certain this is a node-core-utils issue.