feat(container): update image ghcr.io/prometheus-community/charts/kube-prometheus-stack ( 78.2.1 ➔ 78.3.0 )

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This PR contains the following updates:

Package	Update	Change
ghcr.io/prometheus-community/charts/kube-prometheus-stack (source)	minor	78.2.1 -> 78.3.0

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--- kubernetes/apps/observability/kube-prometheus-stack/app Kustomization: observability/kube-prometheus-stack OCIRepository: observability/kube-prometheus-stack

+++ kubernetes/apps/observability/kube-prometheus-stack/app Kustomization: observability/kube-prometheus-stack OCIRepository: observability/kube-prometheus-stack

@@ -11,9 +11,9 @@

 spec:
   interval: 5m
   layerSelector:
     mediaType: application/vnd.cncf.helm.chart.content.v1.tar+gzip
     operation: copy
   ref:
-    tag: 78.2.1
+    tag: 78.3.0
   url: oci://ghcr.io/prometheus-community/charts/kube-prometheus-stack
 

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--- HelmRelease: observability/kube-prometheus-stack ValidatingWebhookConfiguration: observability/kube-prometheus-stack-admission

+++ HelmRelease: observability/kube-prometheus-stack ValidatingWebhookConfiguration: observability/kube-prometheus-stack-admission

@@ -10,13 +10,13 @@

     app.kubernetes.io/part-of: kube-prometheus-stack
     release: kube-prometheus-stack
     heritage: Helm
     app.kubernetes.io/name: kube-prometheus-stack-prometheus-operator
     app.kubernetes.io/component: prometheus-operator-webhook
 webhooks:
-- name: prometheusrulemutate.monitoring.coreos.com
+- name: prometheusrulevalidate.monitoring.coreos.com
   failurePolicy: Ignore
   rules:
   - apiGroups:
     - monitoring.coreos.com
     apiVersions:
     - '*'
@@ -32,7 +32,29 @@

       path: /admission-prometheusrules/validate
   timeoutSeconds: 10
   admissionReviewVersions:
   - v1
   - v1beta1
   sideEffects: None
+- name: alertmanagerconfigsvalidate.monitoring.coreos.com
+  failurePolicy: Ignore
+  rules:
+  - apiGroups:
+    - monitoring.coreos.com
+    apiVersions:
+    - v1alpha1
+    resources:
+    - alertmanagerconfigs
+    operations:
+    - CREATE
+    - UPDATE
+  clientConfig:
+    service:
+      namespace: observability
+      name: kube-prometheus-stack-operator
+      path: /admission-alertmanagerconfigs/validate
+  timeoutSeconds: 10
+  admissionReviewVersions:
+  - v1
+  - v1beta1
+  sideEffects: None