MINOR: haproxy: upgrade base image to haproxy 2.6.6 (#162)

Author: sharifm-informatica

haproxy/Chart.yaml

@@ -17,7 +17,7 @@ name: haproxy
 description: A Helm chart for HAProxy on Kubernetes
 type: application
 version: 1.17.0
-appVersion: 2.6.5
+appVersion: 2.6.6
 kubeVersion: ">=1.17.0-0"
 keywords:
   - haproxy
@@ -31,5 +31,4 @@ maintainers:
 engine: gotpl
 annotations:
   artifacthub.io/changes: |
-    - Update base image to 2.6.5 release
-    - Fix for namespaceOverride not used for configMap
+    - Update base image to 2.6.6 release