ahuston-0 9a40f00d69 adjust ERROR_PR_ALREADY_EXISTS based on updated failure message
Uses below error message as a basis:

Create or update the pull request
Attempting creation of pull request
::error::pull request already exists for these targets [id: 30, issue_id: 27, head_repo_id: 1, base_repo_id: 1, head_branch: update-flake-lock, base_branch: main]
2025-05-18 00:01:16 +00:00
..