Updates a webhook for a process.

PUT https://{hostname}:{port}
    /cli/process/{process}/webhooks/{webhook}/withCredentials

This command takes a JSON request string or file. Use the following template for the request:

{
  "proxyHost": "Proxy Host. Updating proxy host will unset 
  proxy username and password if those are not provided",
  "proxyPassword": "Password to use for basic 
  authentication with the proxy",
  "proxyPort": "Proxy Port. Updating proxy port will unset 
  proxy username and password if those are not provided",
  "proxyUsername": "Username to use for basic 
  authentication with the proxy",
  "url": "Url for the webhook",
  "webhookTemplate": "Name or ID of the webhook template"
}