ci: fix commit author

Author: tsuyoshicho

.github/workflows/generate.yml

@@ -37,8 +37,7 @@ jobs:
         uses: EndBug/add-and-commit@v7
         with:
           cwd: './target'
-          author_name: '${{ github.actor }}'
-          author_email: '${{ github.actor }}@users.noreply.github.com'
+          default_author: github_actions
           message: |-
             Generated by GitHub workflow ${{ github.run_id }}