[WIP] Fix failing GitHub Actions workflow for Assign Release Conductor

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Fix the failing GitHub Actions workflow "Assign Release Conductor / assign-release-conductor (pull_request)".
Analyze the workflow logs, identify the root cause of the failure, and implement a fix.
Job ID: 64041888441
Job URL: /primer/react/actions/runs/22150960971/job/64041888441?pr=7562

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Latest commit: 889e3a0

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