[stable/mariadb] Release 4.2.6 (#6505)

* mariadb: update to `10.1.34-debian-9`

* mariadb: bump chart appVersion to `10.1.34-debian-9`

* mariadb: bump chart version to `4.2.6`

stable/mariadb/Chart.yaml

@@ -1,6 +1,6 @@
 name: mariadb
-version: 4.2.5
-appVersion: 10.1.34
+version: 4.2.6
+appVersion: 10.1.34-debian-9
 description: Fast, reliable, scalable, and easy to use open-source relational database system. MariaDB Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed software. Highly available MariaDB cluster.
 keywords:
 - mariadb

stable/mariadb/values.yaml

@@ -4,7 +4,7 @@
 image:
   registry: docker.io
   repository: bitnami/mariadb
-  tag: 10.1.34
+  tag: 10.1.34-debian-9
   ## Specify a imagePullPolicy
   ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
   ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images