Release cluster-v0.6.0 (#824)

Signed-off-by: Itay Grudev <itay@verito.digital>
Co-authored-by: Itay Grudev <itay@verito.digital>

Author: cnpg-bot

charts/cluster/Chart.yaml

@@ -21,7 +21,7 @@ name: cluster
 description: Deploys and manages a CloudNativePG cluster and its associated resources.
 icon: https://raw.githubusercontent.com/cloudnative-pg/artwork/main/cloudnativepg-logo.svg
 type: application
-version: 0.5.0
+version: 0.6.0
 sources:
   - https://github.com/cloudnative-pg/charts
 keywords:

charts/cluster/README.md

@@ -1,6 +1,6 @@
 # cluster
 
-![Version: 0.5.0](https://img.shields.io/badge/Version-0.5.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square)
+![Version: 0.6.0](https://img.shields.io/badge/Version-0.6.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square)
 
 > **Warning**
 > ### This chart is under active development.