chore(deps): update ghcr.io/prometheus-community/charts/kube-prometheus-stack docker tag to v78

Author: renovate[bot]

argo/app-of-apps/templates/monitoring/kube-prometheus-stack.yaml

@@ -44,7 +44,7 @@ spec:
 
     - repoURL: ghcr.io/prometheus-community/charts
       chart: kube-prometheus-stack
-      targetRevision: 77.14.0
+      targetRevision: 78.3.0
 
       helm:
         valuesObject: