[stable/drupal] Update dependencies for drupal (#15875)

Signed-off-by: tompizmor <tompizmor@gmail.com>

stable/drupal/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: drupal
-version: 4.1.1
+version: 5.0.0
 appVersion: 8.7.5
 description: One of the most versatile open source content management systems.
 keywords:

stable/drupal/requirements.lock

@@ -1,6 +1,6 @@
 dependencies:
 - name: mariadb
   repository: https://kubernetes-charts.storage.googleapis.com/
-  version: 5.11.3
-digest: sha256:0593b73b2163fbbbae061de1aa2b8280d43f8a423a91e1c7375c0b6c86784b1c
-generated: 2019-07-04T15:22:33.202849507Z
+  version: 6.7.2
+digest: sha256:a363428d6463718a9523a88c70e485218373e315f2979cb1bb17b034ec2be96a
+generated: "2019-07-25T09:25:00.878691+02:00"

stable/drupal/requirements.yaml

@@ -1,5 +1,5 @@
 dependencies:
 - name: mariadb
-  version: 5.x.x
+  version: 6.x.x
   repository: https://kubernetes-charts.storage.googleapis.com/
   condition: mariadb.enabled