Upgrade Guide CX4.9.5 to CX4.9.6

Before upgrading, ensure that the system is idle, i.e, all agents are logged out from the AgentDesk.

Update helm repo
```
helm repo update expertflow
```

Update the Core helm chart

# Add the following new environment variable under customer-widget
          name: SURVEY_FORM_LINK
          value: "https://solution.domain.com/Base_URL/"

# Update the following tag:
  cutomer-widget tag: 4.9.6
  
# Upgrade the Core chart version
helm upgrade --install --namespace expertflow --create-namespace   ef-cx  --debug --values helm-values/ef-cx-custom-values.yaml expertflow/cx --version 4.9.6