Update Helm release redis to v16.8.5

Chart.yaml

@@ -5,7 +5,7 @@ description: WordPress with a replicated MariaDB backend
 name: wordpress
 # Please only change the chart version as part of the release procedure: see
 # RELEASING.md
-version: 0.6.18
+version: 0.6.19
 icon: https://make.wordpress.org/design/files/2016/09/WordPress-logotype-wmark.png
 dependencies:
   - name: mariadb
@@ -15,7 +15,7 @@ dependencies:
       - mysql
     alias: database
   - name: redis
-    version: 16.8.4
+    version: 16.8.5
     repository: "https://charts.bitnami.com/bitnami"
     condition: redis.enabled
     tags: