tools: summarize auto-start-ci failures

[panva]

This turns an existing comment from this:

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Failed to start CI

- Validating Jenkins credentials
✔  Jenkins credentials valid
- Querying data for job/node-test-pull-request/77351/
✔  Build data downloaded
   ℹ  Existing CI run found: https://ci.nodejs.org/job/node-test-pull-request/77351/
   ✖  Refusing to start a potentially duplicate CI job. Use the "Resume build" button in the Jenkins UI, or start a new CI manually.

https://github.com/nodejs/node/actions/runs/34583858265

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to this:

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Failed to start CI

   ℹ  Existing CI run found: https://ci.nodejs.org/job/node-test-pull-request/77351/
   ✖  Refusing to start a potentially duplicate CI job. Use the "Resume build" button in the Jenkins UI, or start a new CI manually.

Full Auto Start CI output

- Validating Jenkins credentials
✔  Jenkins credentials valid
- Querying data for job/node-test-pull-request/77351/
✔  Build data downloaded
   ℹ  Existing CI run found: https://ci.nodejs.org/job/node-test-pull-request/77351/
   ✖  Refusing to start a potentially duplicate CI job. Use the "Resume build" button in the Jenkins UI, or start a new CI manually.

View workflow run

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[nodejs-github-bot]

Review requested:

• @nodejs/actions