[Nextcloud] Support k8s 1.16 (#19229)

Update chart dependencies to versions that support k8s 1.16.
Needed because the old versions of the redis and mariadb charts
contain calls to [deprecated APIs](https://kubernetes.io/blog/2019/07/18/api-deprecations-in-1-16/).

Signed-off-by: Tom Snyder <tomsnyder@varac.net>

stable/nextcloud/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: nextcloud
-version: 1.8.1
+version: 1.8.2
 appVersion: 17.0.0
 description: A file sharing server that puts the control and security of your own data back into your hands.
 keywords:

stable/nextcloud/requirements.lock

@@ -1,9 +1,9 @@
 dependencies:
 - name: mariadb
   repository: https://kubernetes-charts.storage.googleapis.com/
-  version: 6.4.3
+  version: 7.1.0
 - name: redis
   repository: https://kubernetes-charts.storage.googleapis.com/
-  version: 8.0.12
-digest: sha256:538090f5752bbbec4dca0189ed8b6835ede0e2e39164e50320629510c603dc5d
-generated: "2019-06-24T19:41:25.184162+02:00"
+  version: 10.0.1
+digest: sha256:88489b3a1a5bf1cd3f9e264e540f8c3515d40020bb1073f3bb281f0da56efc3f
+generated: "2019-11-28T12:08:10.111637339+01:00"

stable/nextcloud/requirements.yaml

@@ -1,9 +1,9 @@
 dependencies:
 - name: mariadb
-  version: ~6.4.0
+  version: ~7.1.0
   repository: https://kubernetes-charts.storage.googleapis.com/
   condition: mariadb.enabled
 - name: redis
-  version: ~8.0.12
+  version: ~10.0.1
   repository: https://kubernetes-charts.storage.googleapis.com/
-  condition: redis.enabled
+  condition: redis.enabled