Add CI action to update Grafana version

Signed-off-by: Michel Hollands <michel.hollands@gmail.com>

.github/configs/updatecli.d/grafana.yaml

@@ -0,0 +1,28 @@
+name: Bump dependency "loki" for Helm chart "meta-monitoring"
+sources:
+    latestGrafanaRelease:
+        name: Get latest grafana release on Github
+        kind: githubrelease
+        spec:
+            owner: grafana
+            repository: grafana
+            name: loki
+            versionfilter:
+                kind: latest
+conditions:
+    grafanaImagePublished:
+        name: Ensure the latest Grafana is published on DockerHub
+        kind: dockerimage
+        source-id: latestGrafanaRelease
+        spec:
+            image: "grafana/grafana"
+targets:
+    grafana:
+        name: Update Grafana version in values.yaml
+        kind: helmchart
+        spec:
+            file: values.yaml
+            key: grafana.image
+            name: charts/meta-monitoring
+            versionincrement: none
+        sourceid: loki

.github/workflows/check-for-dependency-updates.yaml

@@ -175,3 +175,35 @@ jobs:
                 labels: dependencies
                 branch: chore/update-minio
                 delete-branch: true
+
+    updateGrafana:
+        name: Update the Grafana version
+        runs-on: "ubuntu-latest"
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v2
+
+            - name: Install Updatecli
+              uses: updatecli/updatecli-action@v2
+
+            - name: Run Updatecli
+              id: update-grafana
+              run: |
+                updatecli apply --config ${UPDATECLI_CONFIG_DIR}/grafana.yaml
+                if ! git diff --exit-code > /dev/null; then
+                  echo "changed=true" >> "${GITHUB_OUTPUT}"
+                fi
+
+            - name: Create pull request
+              if: steps.update-grafana.outputs.changed == 'true'
+              uses: peter-evans/create-pull-request@v5
+              with:
+                title: "[dependency] Update the Grafana version"
+                body: "Updates the Grafana version"
+                base: main
+                author: "${{ github.actor }} <${{ github.actor }}@users.noreply.github.com>"
+                committer: "GitHub <noreply@github.com>"
+                commit-message: Update Grafana version
+                labels: dependencies
+                branch: chore/update-minio
+                delete-branch: true

charts/meta-monitoring/templates/grafana/grafana.yaml

@@ -32,7 +32,7 @@ spec:
           - 0
       containers:
         - name: grafana
-          image: grafana/grafana:10.0.0
+          image: {{- .Values.grafana.image }}
           imagePullPolicy: IfNotPresent
           ports:
             - containerPort: 3000

charts/meta-monitoring/values.yaml

@@ -31,6 +31,7 @@ local:
     enabled: false  # This should be set to true if any of the previous is enabled
 
 grafana:
+  image: grafana/grafana:10.0.0
   # Gateway ingress configuration
   ingress:
     # -- Specifies whether an ingress for the gateway should be created