Bump Graylog version to 2.3.17 and appVersion to 6.3.2

Author: Thiago Loureiro

charts/graylog/Chart.yaml

@@ -1,8 +1,8 @@
 apiVersion: v2
 name: graylog
 home: https://www.graylog.org
-version: 2.3.16
-appVersion: 6.3.1
+version: 2.3.17
+appVersion: 6.3.2
 description: Graylog is the centralized log management solution built to open
   standards for capturing, storing, and enabling real-time analysis of terabytes
   of machine data.

charts/graylog/values.yaml

@@ -55,7 +55,7 @@ graylog:
   ##
   image:
     repository: "graylog/graylog"
-    tag: "6.3.1"
+    tag: "6.3.2"
     pullPolicy: "IfNotPresent"
 
   ## Graylog default Java option