delete license_key and token properties

[alexvdvalk]

When merging settings, the CLI tries to read and update the license_key and license_token. This is prohibited so we need to manually delete these attributes when updating the project settings.

https://github.com/directus/directus/blob/main/api/src/services/settings.ts#L24

The DirectusSettings type outdated. Should this be included in the PR to match V12 Settings type?

[alexvdvalk]

[alexvdvalk]

We probably need to extend this to any field in the settings which stores and API KEY:

{
"ai_openai_compatible_api_key": null,
"ai_google_api_key": "**********",
"ai_anthropic_api_key": "**********",
"ai_openai_api_key": "**********"
}