Update remote_runner.md

Author: harry-secure

book/src/lib/k8s_new/remote_runner.md

@@ -82,7 +82,7 @@ ARG NODE_VERSION
 ENV GOOS="linux"
 ENV GOARCH="amd64"
 ENV BASE_URL="https://get.helm.sh"
-ENV HELM_VERSION="3.10.3"
+ENV HELM_VERSION="3.18.4"
 ENV KUBE_VERSION="v1.25.5"
 ENV NODE_VERSION=18