[Bug]: Dependabot PRs fail on "Update PR Description" github action step

[rbren]

Is there an existing issue for the same bug?

• [X] I have checked the existing issues.

Describe the bug and reproduction steps

Dependabot PRs fail on the "Update PR Description" github action step. We should not run this script if the actor is dependabot

OpenHands Installation

Docker command in README

OpenHands Version

No response

Operating System

None

Logs, Errors, Screenshots, and Additional Context

No response

[github-actions[bot]]

OpenHands started fixing the issue! You can monitor the progress here.

[github-actions[bot]]

A potential fix has been generated and a draft PR #4697 has been created. Please review the changes.