Provider doesn't support some languages (e.g. ES-419) for custom prompt Resources

[jbonifield3]

Checklist

• I have looked into the README and have not found a suitable solution or answer.
• I have looked into the documentation and have not found a suitable solution or answer.
• I have searched the issues and have not found a suitable solution or answer.
• I have upgraded to the latest version of this provider and the issue still persists.
• I have searched the Auth0 Community forums and have not found a suitable solution or answer.
• I agree to the terms within the Auth0 Code of Conduct.

Description

We are using the Terraform provider to support multiple languages for login with the new UL. One of the languages we want to support with custom prompts is is ES-419, which is supported by Auth0:

However, when we went to deploy, we saw errors and that this language was not supported (there are some others missing as well, such as te - Tegulu)

Checking in resource_custom_text.go, I see ES-419 missing from both the languagesURL and fallbackAvailableLanguages. It seems like while those other languages were added to the API, they were not added as supportable by the provider

Expectation

ES-419 should be supported as a language by the provider.

Reproduction

1. The associated custom text resource shows the ES-419 language custom text, which errors when deploying
   resource_prompt_custom_text_es-419.tf.txt

Auth0 Terraform Provider version

1.6.0

Terraform version

1.8.0