Update azure/setup-helm action to v4

Author: renovate[bot]

.github/workflows/charts.yml

@@ -24,7 +24,7 @@ jobs:
           git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
 
       - name: Install Helm
-        uses: azure/setup-helm@v3
+        uses: azure/setup-helm@v4
 
       - name: Run chart-releaser
         uses: helm/chart-releaser-action@v1.6.0