chore(deps): update helm release loki to v6.26.0

Author: renovate[bot]

kubernetes/apps/loki/Chart.yaml

@@ -6,6 +6,6 @@ version: 0.1.1
 dependencies:
   - name: loki
     repository: https://grafana.github.io/helm-charts
-    version: 6.4.2
+    version: 6.26.0
     alias: loki