[kube-prometheus-stack] Fix default Kubernetes version assignment logic (#6658)

Signed-off-by: EmyLIEUTAUD <67641786+EmyLIEUTAUD@users.noreply.github.com>

Author: EmyLIEUTAUD

charts/kube-prometheus-stack/Chart.yaml

@@ -28,7 +28,7 @@ name: kube-prometheus-stack
 sources:
   - https://github.com/prometheus-community/helm-charts
   - https://github.com/prometheus-operator/kube-prometheus
-version: 82.1.0
+version: 82.1.1
 # renovate: github=prometheus-operator/prometheus-operator
 appVersion: v0.89.0
 kubeVersion: ">=1.25.0-0"

charts/kube-prometheus-stack/charts/crds/templates/upgrade/job.yaml

@@ -75,7 +75,7 @@ spec:
       containers:
         - name: kubectl
           {{- $kubectlRegistry := .Values.global.imageRegistry | default .Values.upgradeJob.image.kubectl.registry -}}
-          {{- $defaultKubernetesVersion := regexFind "v\\d+\\.\\d+\\.\\d+" .Capabilities.KubeVersion.Version }}
+          {{- $defaultKubernetesVersion := (ternary (printf "%s.0" .Capabilities.KubeVersion.Version) (regexFind "v\\d+\\.\\d+\\.\\d+" .Capabilities.KubeVersion.Version) (regexMatch "^v\\d+\\.\\d+$" .Capabilities.KubeVersion.Version)) -}}
           {{- if .Values.upgradeJob.image.kubectl.sha }}
           image: "{{ $kubectlRegistry }}/{{ .Values.upgradeJob.image.kubectl.repository }}:{{ .Values.upgradeJob.image.kubectl.tag | default $defaultKubernetesVersion }}@sha256:{{ .Values.upgradeJob.image.kubectl.sha }}"
           {{- else }}