remove unsupported option

Author: machisuji

.github/workflows/release.yml

@@ -71,7 +71,6 @@ jobs:
         uses: helm/chart-releaser-action@v1.5.0
         with:
           config: .github/cr.yaml
-          skip_existing: true
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"