Changes to Retrieve a single Category.

the response property category/parent_id became nullable for the status 200

the security scope categories was added to the endpoint's security scheme BasicAuthentication

the security scope read_categories was added to the endpoint's security scheme OAuth2

the security scope assets was removed from the endpoint's security scheme BasicAuthentication

the security scope read_store was removed from the endpoint's security scheme OAuth2

added the optional property category/description to the response with the 200 status

added the optional property category/images to the response with the 200 status

added the optional property category/products to the response with the 200 status