On-prem: missing gangplank trustedCAPath field in the schema

[stefanoghinelli]

Describe the bug
The schema is currently missing the Spec.Distribution.Modules.Auth.OIDCKubernetesAuth.trustedCAPath field for the OnPremises provider.

        "trustedCAPath": {
          "type": "boolean",
          "description": "If true, a trustedCAPath will be defined"
        }

This issue could be temporarily mitigated using a distribution patch, but a permanent fix is needed.

To Reproduce
Steps to reproduce the behavior:

1. Attempt to use the OnPremises provider with trustedCAPath.
2. Observe that the field is not present in the schema.

Expected behavior
The schema should include the trustedCAPath field, allowing its configuration for the OnPremises provider.

Screenshots
N/A

Desktop (please complete the following information):
N/A

Kubernetes (please complete the following information):
N/A

Additional context
The template affected is located at: ./templates/distribution/manifests/auth/secrets/gangplank.yml.tpl.