Update dtzar/helm-kubectl Docker tag to v3.19.0

Author: renovate[bot]

.github/workflows/datree.yaml

@@ -14,7 +14,7 @@ jobs:
     name: Validate Helm charts 🔒
     runs-on: ubuntu-latest
     container:
-      image: dtzar/helm-kubectl:3.15.3
+      image: dtzar/helm-kubectl:3.19.0
     steps:
       - name: Checkout 🛎️
         uses: actions/checkout@v4