[stable/phabricator] Release 2.1.8 (#7279)

* phabricator: update to `2018.33.0-debian-9`

* phabricator: bump chart appVersion to `2018.33.0`

* phabricator: bump chart version to `2.1.8`

stable/phabricator/Chart.yaml

@@ -1,6 +1,6 @@
 name: phabricator
-version: 2.1.7
-appVersion: 2018.32.0
+version: 2.1.8
+appVersion: 2018.33.0
 description: Collection of open source web applications that help software companies build better software.
 keywords:
 - phabricator

stable/phabricator/values.yaml

@@ -4,7 +4,7 @@
 image:
   registry: docker.io
   repository: bitnami/phabricator
-  tag: 2018.32.0-debian-9
+  tag: 2018.33.0-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