chore(version): update to version 0.21.0

Author: tchiotludo

build.gradle

@@ -13,7 +13,7 @@ plugins {
 }
 
 group "org.akhq"
-version "0.19.0"
+version "0.21.0"
 mainClassName = "org.akhq.App"
 sourceCompatibility = 11
 

helm/akhq/Chart.yaml

@@ -1,8 +1,8 @@
 apiVersion: v1
-appVersion: "0.20.0"
+appVersion: "0.21.0"
 description: Kafka GUI for Apache Kafka to manage topics, topics data, consumers group, schema registry, connect and more...
 name: akhq
-version: 0.2.7
+version: 0.2.8
 keywords:
   - kafka
   - confluent