Changes to Get all energy merchants

the response property data/items/cooperative became nullable for the status 200

the response property data/items/hasNativeApp became nullable for the status 200

the response property data/items/usps/items/description became nullable for the status 200

response property data/items/cooperative list-of-types was narrowed by removing types null from media type application/json of response 200

response property data/items/hasNativeApp list-of-types was narrowed by removing types null from media type application/json of response 200

response property data/items/usps/items/description list-of-types was narrowed by removing types null from media type application/json of response 200