[stable/drupal] Release 0.9.2 (#1768)

* drupal: update to `bitnami/drupal:8.3.7-r0`

* drupal: bump chart appVersion to `8.3.7`

* drupal: bump chart version to `0.9.2`

stable/drupal/Chart.yaml

@@ -1,6 +1,6 @@
 name: drupal
-version: 0.9.1
-appVersion: 8.3.4
+version: 0.9.2
+appVersion: 8.3.7
 description: One of the most versatile open source content management systems.
 keywords:
 - drupal

stable/drupal/values.yaml

@@ -1,7 +1,7 @@
 ## Bitnami Drupal image version
 ## ref: https://hub.docker.com/r/bitnami/drupal/tags/
 ##
-image: bitnami/drupal:8.3.4-r0
+image: bitnami/drupal:8.3.7-r0
 
 ## Optionally specify an array of imagePullSecrets.
 ## Secrets must be manually created in the namespace.