Removal of accepts marketing fields in Admin API customer resources

As of API version 2024-01, the following customer resource fields have been removed: acceptsMarketing, acceptsMarketingUpdatedAt, and MarketingOptInLevel. They have been deprecated since 2022-04 and the field emailMarketingConsent should be used instead.

Learn more about the affected resources:

• Customer object in GraphQL Queries.
• CustomerInput object on GraphQL Mutations.
• customer resource in REST.
• customers/create, customers/delete, customers/disable, customers/enable, and customers/update webhook topics (https://shopify.dev/docs/api/admin-rest/2024-01/resources/webhook#event-topics).