[kube-prometheus-stack] support encoded string for thanos sidecar secret (#5999)

Co-authored-by: Jan-Otto Kröpke <[email protected]>

Author: trouaux

charts/kube-prometheus-stack/Chart.yaml

@@ -31,7 +31,7 @@ name: kube-prometheus-stack
 sources:
   - https://github.com/prometheus-community/helm-charts
   - https://github.com/prometheus-operator/kube-prometheus
-version: 77.1.2
+version: 77.1.3
 # renovate: github=prometheus-operator/prometheus-operator
 appVersion: v0.85.0
 kubeVersion: ">=1.25.0-0"

charts/kube-prometheus-stack/templates/prometheus/secret.yaml

@@ -10,6 +10,6 @@ metadata:
     app.kubernetes.io/component: prometheus
 {{ include "kube-prometheus-stack.labels" . | indent 4 }}
 data:
-  object-storage-configs.yaml: {{ toYaml .Values.prometheus.prometheusSpec.thanos.objectStorageConfig.secret | b64enc | quote }}
+  object-storage-configs.yaml: {{ tpl (toYaml .Values.prometheus.prometheusSpec.thanos.objectStorageConfig.secret) $ | b64enc | quote }}
 {{- end }}
 {{- end }}