fix(updates.jenkins.io): allow non SSL connections to Redis

[lemeurherve]

Fix the following error when trying to deploy jenkins-infra/kubernetes-management#4211:

UTC Database is down: dial tcp 52.184.161.24:6379: i/o timeout

This is the same settings (allow non SSL) which is currently configured for the mirrorbits database.

Manually tested via Azure Portal, current settings:

Settings with this change:

Connection OK.

[lemeurherve]

Terraform will perform the following actions:

  # azurerm_redis_cache.updates_jenkins_io will be updated in-place
  ~ resource "azurerm_redis_cache" "updates_jenkins_io" {
      ~ enable_non_ssl_port           = false -> true
        id                            = "/subscriptions/dff2ec18-6a8e-405c-8e45-b7df7465acf0/resourceGroups/updates-jenkins-io/providers/Microsoft.Cache/redis/updates-jenkins-io"
        name                          = "updates-jenkins-io"
        tags                          = {
            "repository" = "jenkins-infra/azure"
            "scope"      = "terraform-managed"
        }
        # (20 unchanged attributes hidden)

        # (1 unchanged block hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.

LGTM, self-merging.