use latest grafana release (#5792)

* use latest grafana release

* Fix maintainer name

stable/grafana/Chart.yaml

@@ -1,6 +1,6 @@
 name: grafana
-version: 1.10.1
-appVersion: 5.1.2
+version: 1.10.2
+appVersion: 5.1.3
 kubeVersion: "^1.8.0-0"
 description: The leading tool for querying and visualizing time series and metrics.
 home: https://grafana.net
@@ -8,7 +8,7 @@ icon: https://raw.githubusercontent.com/grafana/grafana/master/public/img/logo_t
 sources:
   - https://github.com/grafana/grafana
 maintainers:
-  - name: Ming Hsieh
+  - name: zanhsieh
     email: zanhsieh@gmail.com
   - name: rtluckie
     email: rluckie@cisco.com

stable/grafana/values.yaml

@@ -11,7 +11,7 @@ deploymentStrategy: RollingUpdate
 
 image:
   repository: grafana/grafana
-  tag: 5.1.2
+  tag: 5.1.3
   pullPolicy: IfNotPresent
 
   ## Optionally specify an array of imagePullSecrets.