Updates a loyalty tier.
Use this endpoint to update tier-specific settings, such as the name and the required points
threshold of an individual loyalty tier. To update global settings that apply to all of a site's loyalty tiers,
use updateTiersProgramSettings().
This function requires elevated permissions and runs only on the backend and on dashboard pages.
Tier ID.
Tier info to update.
This method doesn’t return any custom errors, but may return standard errors. Learn more about standard Wix errors.