Upgrade prometheus

This allows avoiding errors with skipCrds:

failed to create typed patch object (..): .spec.scrapeConfigNamespaceSelector: field not declared in schema

due to preinstalled legacy CRDs.

To do so, set the following via features.monitoring.values:

prometheus:
  prometheusSpec:
    scrapeConfigNamespaceSelector: null
    scrapeConfigSelectorNilUsesHelmValues: null
    scrapeConfigSelector: null

See also
prometheus-community/helm-charts#4906

applications/cluster-resources/monitoring/prometheus-stack-helm-values.ftl.yaml

@@ -271,25 +271,21 @@ prometheus:
       runAsUser: null
     </#if>
     # Find podMonitors, serviceMonitor, etc. in all namespaces
-    podMonitorNamespaceSelector:
+    serviceMonitorNamespaceSelector:
       matchLabels: {}
-    probeNamespaceSelector:
+    # With this, we don't need the label "release: kube-prometheus-stack" on the service monitor
+    serviceMonitorSelectorNilUsesHelmValues: false
+    podMonitorNamespaceSelector:
       matchLabels: {}
+    podMonitorSelectorNilUsesHelmValues: false
     ruleNamespaceSelector:
       matchLabels: {}
-    serviceMonitorNamespaceSelector:
+    ruleSelectorNilUsesHelmValues: false
+    scrapeConfigSelectorNilUsesHelmValues: false
+    probeNamespaceSelector:
       matchLabels: {}
-    # With this, we don't need the label "release: kube-prometheus-stack" on the service monitor
-    podMonitorSelector:
-      matchLabels: null
-    probeSelector:
-      matchLabels: null
-    ruleSelector:
-      matchLabels: null
-    scrapeConfigSelector:
-      matchLabels: null
-    serviceMonitorSelector:
-      matchLabels: null
+    probeSelectorNilUsesHelmValues: false
+
   <#if podResources == true>
     resources:
       limits:

src/main/groovy/com/cloudogu/gitops/config/ApplicationConfigurator.groovy

@@ -189,9 +189,9 @@ class ApplicationConfigurator {
                             helm  : [
                                     chart  : 'kube-prometheus-stack',
                                     /* When changing the chart, note that Argo CD also applies the CRDs from GitHub. */
-                                    repoURL: 'https://schnatterer.github.io/prom-helm-charts',
+                                    repoURL: 'https://prometheus-community.github.io/helm-charts',
                                     /* When updating this make sure to also test if air-gapped mode still works */
-                                    version: '63.0.0',
+                                    version: '66.2.1',
                                     grafanaImage: '',
                                     grafanaSidecarImage: '',
                                     prometheusImage: '',