ci: add workflow to auto-update charts

.github/workflows/chart-update.yaml

@@ -0,0 +1,46 @@
+---
+name: "chart-update"
+
+on:
+  schedule:
+  - cron: "0 7 * * 1-5"
+
+  workflow_dispatch:
+    inputs:
+      update-strategy:
+        description: "Update strategy to use. Valid values are 'patch', 'minor' or 'major'"
+        type: choice
+        options:
+        - "patch"
+        - "minor"
+        - "major"
+        required: true
+      excluded-dependencies:
+        description: "Comma-separated list of dependencies to exclude from the update (i.e. 'dependency1,dependency2,dependency3')"
+        type: string
+        required: false
+        default: ""
+      dry-run:
+        description: "Activate dry-run mode"
+        type: boolean
+        required: false
+        default: true
+
+jobs:
+
+  chart-update-schedule:
+    if: ${{ github.event_name == 'schedule' }}
+    strategy:
+      matrix:
+        update-strategy: ["major", "minor"]
+    uses: camptocamp/devops-stack/.github/workflows/modules-chart-update.yaml@main
+    with:
+      update-strategy: ${{ matrix.update-strategy }}
+
+  chart-update-manual:
+    if: ${{ github.event_name == 'workflow_dispatch' }}
+    uses: camptocamp/devops-stack/.github/workflows/modules-chart-update.yaml@main
+    with:
+      update-strategy: ${{ inputs.update-strategy }}
+      excluded-dependencies: ${{ inputs.excluded-dependencies }}
+      dry-run: ${{ inputs.dry-run }}

README.adoc

@@ -1,6 +1,6 @@
 = devops-stack-module-kube-prometheus-stack
 // Document attributes to replace along the document
-:chart-version: 48.1.1
+:kube-prometheus-stack-chart-version: 48.1.1
 :chart-url: https://github.com/prometheus-community/helm-charts/blob/main/charts/kube-prometheus-stack
 
 A https://devops-stack.io[DevOps Stack] module to deploy and configure https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack[kube-prometheus-chart].

charts/kube-prometheus-stack/Chart.yaml

@@ -6,5 +6,5 @@ description: |
   This chart installs the kube-prometheus-stack and configures Grafana dashboards for monitoring Kubernetes cluster with Prometheus.
 dependencies:
   - name: "kube-prometheus-stack"
-    version: "^48"
+    version: "48.1.1"
     repository: "https://prometheus-community.github.io/helm-charts"