Update helm chart and readme

Author: ciarams87

charts/nginx-gateway-fabric/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: nginx-gateway-fabric
 description: NGINX Gateway Fabric
 type: application
-version: 2.1.4
+version: 2.2.0
 appVersion: "edge"
 kubeVersion: ">= 1.25.0-0"
 home: https://github.com/nginx/nginx-gateway-fabric

charts/nginx-gateway-fabric/README.md

@@ -1,7 +1,7 @@
 
 # NGINX Gateway Fabric Helm Chart
 
-![Version: 2.1.4](https://img.shields.io/badge/Version-2.1.4-informational?style=flat-square) ![AppVersion: edge](https://img.shields.io/badge/AppVersion-edge-informational?style=flat-square)
+![Version: 2.2.0](https://img.shields.io/badge/Version-2.2.0-informational?style=flat-square) ![AppVersion: edge](https://img.shields.io/badge/AppVersion-edge-informational?style=flat-square)
 
 - [NGINX Gateway Fabric Helm Chart](#nginx-gateway-fabric-helm-chart)
   - [Introduction](#introduction)