[stable/joomla] Release 0.4.7 (#974)

* joomla: update to `bitnami/joomla:3.7.0-r0`

* joomla: bump chart version to `0.4.7`

* joomla: update to `bitnami/joomla:3.7.0-r1`

stable/joomla/Chart.yaml

@@ -1,5 +1,5 @@
 name: joomla
-version: 0.4.6
+version: 0.4.7
 description: PHP content management system (CMS) for publishing web content
 keywords:
 - joomla

stable/joomla/values.yaml

@@ -1,7 +1,7 @@
 ## Bitnami Joomla! image version
 ## ref: https://hub.docker.com/r/bitnami/joomla/tags/
 ##
-image: bitnami/joomla:3.6.5-r5
+image: bitnami/joomla:3.7.0-r1
 
 ## Specify a imagePullPolicy
 ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'