Update kube-prometheus-stack to 56.6.2 (#337)

Also, make minor changes to cluster.tf as 1.24 goes obsolete.

This was deployed and tested on private GCP project

src/app_charts/prometheus/BUILD.bazel

@@ -4,7 +4,7 @@ load("//bazel:app.bzl", "app")
 
 helm_template(
     name = "prometheus-operator-chart.cloud",
-    chart = "//third_party/kube-prometheus-stack:kube-prometheus-stack-41.5.1.tgz",
+    chart = "//third_party/kube-prometheus-stack:kube-prometheus-stack-56.6.2.tgz",
     helm_version = 3,
     # The namespace will later be replaced with the actual one.
     namespace = "HELM-NAMESPACE",
@@ -15,7 +15,7 @@ helm_template(
 
 helm_template(
     name = "prometheus-operator-chart.robot",
-    chart = "//third_party/kube-prometheus-stack:kube-prometheus-stack-41.5.1.tgz",
+    chart = "//third_party/kube-prometheus-stack:kube-prometheus-stack-56.6.2.tgz",
     helm_version = 3,
     # The namespace will later be replaced with the actual one.
     namespace = "HELM-NAMESPACE",

src/bootstrap/cloud/terraform/cluster.tf

@@ -4,8 +4,10 @@
 # service account for the nodes. This service account cannot be used by the
 # workloads: see workload-identity.tf for those service accounts.
 
+# Might need to update this to a later version if the version here is too far
+# behind and is removed as a valid version.
 locals {
-  min_k8s_master_version = "1.24"
+  min_k8s_master_version = "1.27"
 }
 
 resource "google_container_cluster" "cloud-robotics" {

third_party/kube-prometheus-stack/update_crd.sh

@@ -2,7 +2,7 @@
 
 # match the version to the app version in this command:
 # helm search repo prometheus-community/kube-prometheus-stack --version='x.y.z'
-VERSION=0.60
+VERSION=0.71
 # https://github.com/prometheus-operator/prometheus-operator/tree/main/example/prometheus-operator-crd
 # TODO(ensonic): can we tak this directly from the chart?
 BASEURL="https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/release-${VERSION}/example/prometheus-operator-crd/monitoring.coreos.com"