Update dependency helm/helm to v4.2.0

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -43,7 +43,7 @@ RUN pip install ./dist/syn_commodore-*-py3-none-any.whl
 
 ARG KUSTOMIZE_VERSION=5.8.1
 ARG JSONNET_BUNDLER_VERSION=v0.6.3
-ARG HELM_VERSION=v4.1.4
+ARG HELM_VERSION=v4.2.0
 
 RUN commodore tool install helm --version ${HELM_VERSION} \
  && commodore tool install kustomize --version ${KUSTOMIZE_VERSION} \