Pin Helm version to v3.19.2 (#16)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: cmyui

.github/workflows/production-deploy.yml

@@ -54,7 +54,7 @@ jobs:
       - name: Install helm
         uses: azure/setup-helm@v3
         with:
-          version: "latest"
+          version: "v3.19.2"
           token: ${{ secrets.GITHUB_TOKEN }}
         id: install