Changes to List campaign items

added the new EXPIRATION_REDUCED enum value to the results/items/status response property for the response status 200

added the new REDUCE_EXPIRATION enum value to the results/items/admin_override/allOf[#/components/schemas/CampaignItemAdminOverride]/decision response property for the response status 200

added the new REDUCE_EXPIRATION enum value to the results/items/reviews/items/decision/allOf[#/components/schemas/CampaignItemReviewDecisionEnum] response property for the response status 200

added the enum value EXPIRATION_REDUCED to the property items/ of the query request parameter statuses

added the optional property results/items/reviews/items/updated_duration_in_minutes to the response with the 200 status

added the new PRINCIPAL_SELF enum value to the results/items/reviews/items/assignment_source response property for the response status 200

added the optional property results/items/reviews/items/resolution_message to the response with the 200 status

endpoint added