use same version for setup-helm

Author: dergeberl

.github/workflows/helmchart.yaml

@@ -22,7 +22,7 @@ jobs:
           git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
 
       - name: Install Helm
-        uses: azure/setup-helm@v5
+        uses: azure/setup-helm@v5.0.0
         with:
           version: v3.8.1