Need to configure TTL on sts-token Anthos Session cookie to a longer time

The sts-token Anthos Session cookie appears to have a 1 hour length. I have not found any options for configuring this to be a longer time, as required by our application. We were looking to try to set it to 4 hours.

https://github.com/GoogleCloudPlatform/asm-user-auth/blob/6512f93d6cc955b78ea6783584a427918a9c7cfe/pkg/configmap.yaml#L35