Update helm values docker.io/bitnami/redis-sentinel to v6.2.6

Signed-off-by: Renovate Bot <[email protected]>

appuio/redis/values.yaml

@@ -64,7 +64,7 @@ sentinel:
     repository: bitnami/redis-sentinel
     # -- Sentinel image tag
     ## ref: https://github.com/bitnami/bitnami-docker-redis-sentinel#supported-tags-and-respective-dockerfile-links
-    tag: 6.2.1-debian-10-r35
+    tag: 6.2.6-debian-10-r35
     # -- Sentinel image pull policy
     # Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
     ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images