refactor: remove redundant checkout step from release workflow

Author: honwhy

.github/workflows/release-workflow.yml

@@ -34,10 +34,6 @@ jobs:
           pnpm zip
           pnpm zip:firefox
 
-      # Checkout the repository
-      - name: Checkout code
-        uses: actions/checkout@v4
-
       # Create a GitHub release
       - name: Create Release
         id: create_release