[stable/osclass] Release 0.5.3 (#4008)

* osclass: update to `bitnami/osclass:3.7.4-r3`

* osclass: bump chart version to `0.5.3`

stable/osclass/Chart.yaml

@@ -1,5 +1,5 @@
 name: osclass
-version: 0.5.2
+version: 0.5.3
 appVersion: 3.7.4
 description: Osclass is a php script that allows you to quickly create and manage
   your own free classifieds site.

stable/osclass/values.yaml

@@ -1,7 +1,7 @@
 ## Bitnami Osclass image version
 ## ref: https://hub.docker.com/r/bitnami/osclass/tags/
 ##
-image: bitnami/osclass:3.7.4-r2
+image: bitnami/osclass:3.7.4-r3
 
 ## Specify a imagePullPolicy
 ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images