feat(helm): update chart loki to 6.20.0

[renovate]

This PR contains the following updates:

Package	Update	Change
loki (source)	minor	6.18.0 -> 6.20.0

---

Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

---

Release Notes

grafana/helm-charts (loki)

v6.20.0

The leading tool for querying and visualizing time series and metrics.

v6.19.0

The leading tool for querying and visualizing time series and metrics.

---

Configuration

📅 Schedule: Branch creation - "every weekend" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[github-actions]

--- kubernetes/apps/observability/loki/app Kustomization: flux-system/loki HelmRelease: observability/loki

+++ kubernetes/apps/observability/loki/app Kustomization: flux-system/loki HelmRelease: observability/loki

@@ -13,13 +13,13 @@

     spec:
       chart: loki
       sourceRef:
         kind: HelmRepository
         name: grafana
         namespace: flux-system
-      version: 6.18.0
+      version: 6.20.0
   dependsOn:
   - name: openebs
     namespace: openebs-system
   install:
     remediation:
       retries: 3

[github-actions]

--- HelmRelease: observability/loki StatefulSet: observability/loki

+++ HelmRelease: observability/loki StatefulSet: observability/loki

@@ -42,13 +42,13 @@

         runAsGroup: 10001
         runAsNonRoot: true
         runAsUser: 10001
       terminationGracePeriodSeconds: 30
       containers:
       - name: loki-sc-rules
-        image: kiwigrid/k8s-sidecar:1.27.5
+        image: kiwigrid/k8s-sidecar:1.28.0
         imagePullPolicy: IfNotPresent
         env:
         - name: METHOD
           value: WATCH
         - name: LABEL
           value: loki_rule