ST-974 Bumped up the helm chart versions

Co-authored-by: Abhijeet Deolalikar <abhijeet_deolalikar@persistent.com>

.release

-release=0.2.30
-tag=0.2.30
+release=0.3.0
+tag=0.3.0

charts/ska-tango-base/Chart.yaml

 apiVersion: v2
-appVersion: 0.2.30
+appVersion: 0.3.0
 description: A Helm chart for deploying the TANGO base system on Kubernetes
 name: ska-tango-base
-version: 0.2.30
+version: 0.3.0
 icon: https://www.skatelescope.org/wp-content/uploads/2016/07/09545_NEW_LOGO_2014.png
 dependencies:
 - name: ska-tango-util
-  version: 0.2.30
+  version: 0.3.0
   repository: file://../ska-tango-util
-  

charts/ska-tango-umbrella/Chart.yaml

 apiVersion: v2
-appVersion: "1.0"
+appVersion: 0.2.0
 description: A Helm chart for deploying the TANGO base system on Kubernetes
 name: ska-tango-umbrella
-version: 0.1.16
+version: 0.2.0
 icon: https://www.skatelescope.org/wp-content/uploads/2016/07/09545_NEW_LOGO_2014.png
 dependencies:
 - name: ska-tango-base
-  version: 0.2.25
+  version: 0.3.0
   repository: file://../ska-tango-base
   condition: ska-tango-base.enabled,global.sub-system.ska-tango-base.enabled
 - name: ska-tango-util
-  version: 0.2.14
+  version: 0.3.0
   repository: file://../ska-tango-util
 

charts/ska-tango-util/Chart.yaml

@@ -2,8 +2,8 @@ apiVersion: v2
 description: A Helm chart library of utilities for TANGO deployents
 name: ska-tango-util
 type: library
-appVersion: 0.2.30
-version: 0.2.30
+appVersion: 0.3.0
+version: 0.3.0
 icon: https://www.skatelescope.org/wp-content/uploads/2016/07/09545_NEW_LOGO_2014.png
 maintainers:
 - name: Matteo Di Carlo