Unexpected input(s) 'head', 'update_existing_pr', valid inputs are ['token', 'path', 'add-paths', 'commit-message', 'committer', 'author', 'signoff', 'branch', 'delete-branch', 'branch-suffix', 'base', 'push-to-fork', 'title', 'body', 'body-path', 'labels', 'assignees', 'reviewers', 'team-reviewers', 'milestone', 'draft']