[fix]Warning: Unexpected input(s) 'ref'

[taiseifukushi]

Warning: Unexpected input(s) 'ref', valid inputs are ['entryPoint', 'args', 'commit_message', 'branch', 'commit_options', 'file_pattern', 'repository', 'commit_user_name', 'commit_user_email', 'commit_author']

https://github.com/husita-h/detection-diff-jikokuhyo-page/runs/7714078730?check_suite_focus=true#step:8:1