Add a dropdown to choose Sync or Release action

.github/workflows/kubeflow-release.yaml

@@ -3,12 +3,16 @@ name: Kubeflow Release Pipeline
 on:
   workflow_dispatch:
     inputs:
-      create-new-release:
-        description: "Create a new release?"
+      release-type:
+        description: "Select the type of action to perform"
         required: true
-        default: "true"
+        default: "Sync"
+        type: choice
+        options:
+          - Sync
+          - Release
 env:
-  CREATE_NEW_RELEASE: ${{ inputs.create-new-release }}
+  CREATE_NEW_RELEASE: ${{ inputs.release-type == 'Release' }}
   REPO_OWNER: opendatahub-io
   REPO_NAME: kubeflow
   BRANCH_NAME: v1.9-branch
@@ -134,10 +138,10 @@ jobs:
           echo "pr_merged=false" >> $GITHUB_OUTPUT
           exit 1
 
-  # 5. Create a release 
+  # 5. Create a release
   create-release:
     needs: [update-release-images, check-pr-merged]
-    if: ${{ needs.check-pr-merged.outputs.pr_merged == 'true' && inputs.create-new-release == 'true' }}
+    if: ${{ needs.check-pr-merged.outputs.pr_merged == 'true' && inputs.release-type == 'Release' }}
     uses: opendatahub-io/kubeflow/.github/workflows/create-release.yaml@main
     with:
       target_branch: "v1.9-branch"